How to get a nested Gutenberg block to parse - wordpress

Question

I'm looking for way to get a specific Gutenbergblock from my post content to use in the archive template. Somewhere in my single post there's an iconlist (nested in a column and the column nested in a row) that I would like to use as a summary of the page in the entry on the archive page.
I wrote this code to search for the block called 'kadence/iconlist' and render it.
<?php $post_id = get_the_ID();
$post = get_post($post_id);
$blocks = parse_blocks($post->post_content);
foreach ($blocks as $block) {
if ($block['blockName'] == 'kadence/iconlist') {
echo render_block($block);
}
} ?>
This renders nothing because the 'kadence/iconlist' is nested. A var_dump of the $block shows this structure:
Array
(
[blockName] => kadence/rowlayout
[attrs] => Array
(
[uniqueID] => _94b9e4-63
[columnGutter] => wider
[colLayout] => equal
[maxWidth] => 1220
[topPadding] => 55
[bottomPadding] => 55
[overlayFirstOpacity] => 1
[overlaySecondOpacity] => 1
[overlayOpacity] => 90
[align] => full
[firstColumnWidth] => 50
[secondColumnWidth] => 50
)
[innerBlocks] => Array
(
[0] => Array
(
[blockName] => kadence/column
[attrs] => Array
(
[topPadding] => 25
[bottomPadding] => 25
[leftPadding] => 25
[rightPadding] => 25
[uniqueID] => _91ffee-25
)
[innerBlocks] => Array
(
[0] => Array
(
[blockName] => kadence/advancedgallery
[attrs] => Array
(
[uniqueID] => _ccc1ba-38
[columns] => Array
(
[0] => 2
[1] => 2
[2] => 2
[3] => 2
[4] => 1
[5] => 1
)
[thumbSize] => full
[ids] => Array
(
[0] => 355
[1] => 354
[2] => 357
[3] => 353
[4] => 351
[5] => 352
[6] => 349
[7] => 348
[8] => 350
)
[type] => thumbslider
[imageRatio] => square
[linkTo] => media
[gutter] => Array
(
[0] => 40
[1] =>
[2] =>
)
[imageRadius] => Array
(
[0] => 0
[1] => 0
[2] => 0
[3] => 0
)
[autoPlay] => 1
[autoSpeed] => 4000
[lightbox] => magnific
[margin] => Array
(
[0] => Array
(
[desk] => Array
(
[0] => 0
[1] => 0
[2] => 0
[3] => 0
)
[tablet] => Array
(
[0] =>
[1] =>
[2] =>
[3] =>
)
[mobile] => Array
(
[0] =>
[1] =>
[2] =>
[3] =>
)
)
)
[thumbnailRatio] => square
[thumbnailColumns] => Array
(
[0] => 4
[1] => 4
[2] => 4
[3] => 4
[4] => 4
[5] => 4
)
)
[innerBlocks] => Array
(
)
[innerHTML] =>
Previous
Next
Previous
Next
[innerContent] => Array
(
[0] =>
Previous
Next
)
)
)
[innerHTML] =>
[innerContent] => Array
(
[0] =>
[1] =>
[2] =>
)
)
[1] => Array
(
[blockName] => kadence/column
[attrs] => Array
(
[id] => 2
[uniqueID] => _b56b72-c0
)
[innerBlocks] => Array
(
[0] => Array
(
[blockName] => kadence/advancedheading
[attrs] => Array
(
[level] => 1
[uniqueID] => _1f94db-5b
)
[innerBlocks] => Array
(
)
[innerHTML] =>
RVS-200HD+
[innerContent] => Array
(
[0] =>
RVS-200HD+
)
)
[1] => Array
(
[blockName] => kadence/iconlist
[attrs] => Array
(
[items] => Array
(
[0] => Array
(
[icon] => fe_check
[link] =>
[target] => _self
[size] => 20
[text] => Voordeel nummer 1 iets met emmers
[width] => 2
[color] =>
[background] =>
[border] =>
[borderRadius] => 0
[borderWidth] => 1
[padding] => 5
[style] => default
)
[1] => Array
(
[icon] => fe_check
[link] =>
[target] => _self
[size] => 20
[text] => Puntje 2
[width] => 2
[color] =>
[background] =>
[border] =>
[borderRadius] => 0
[borderWidth] => 1
[padding] => 5
[style] => default
)
[2] => Array
(
[icon] => fe_check
[link] =>
[target] => _self
[size] => 20
[text] => Puntje 3, deze zijn per bericht gewoon aan te passen
[width] => 2
[color] =>
[background] =>
[border] =>
[borderRadius] => 0
[borderWidth] => 1
[padding] => 5
[style] => default
)
[3] => Array
(
[icon] => fe_check
[link] =>
[target] => _self
[size] => 20
[width] => 2
[color] =>
[background] =>
[border] =>
[borderRadius] => 0
[borderWidth] => 1
[padding] => 5
[style] => default
[text] => En toe te voegen
)
)
[listCount] => 4
[uniqueID] => _342687-70
)
[innerBlocks] => Array
(
)
[innerHTML] =>
Voordeel nummer 1 iets met emmers
Puntje 2
Puntje 3, deze zijn per bericht gewoon aan te passen
En toe te voegen
[innerContent] => Array
(
[0] =>
Voordeel nummer 1 iets met emmers
Puntje 2
Puntje 3, deze zijn per bericht gewoon aan te passen
En toe te voegen
)
)
[2] => Array
(
[blockName] => core/block
[attrs] => Array
(
[ref] => 918
)
[innerBlocks] => Array
(
)
[innerHTML] =>
[innerContent] => Array
(
)
)
)
[innerHTML] =>
[innerContent] => Array
(
[0] =>
[1] =>
[2] =>
[3] =>
[4] =>
[5] =>
[6] =>
)
)
)
[innerHTML] =>
[innerContent] => Array
(
[0] =>
[1] =>
[2] =>
[3] =>
[4] =>
)
)
Array
(
[blockName] =>
[attrs] => Array
(
)
[innerBlocks] => Array
(
)
[innerHTML] =>
[innerContent] => Array
(
[0] =>
)
)
How do I have to change the if($block['blockName'] == 'kadence/iconlist' to actually get to the kadence/iconlist block?