@Darrell_Tabar If I understand you correctly, what you're looking to do is see any cards on your board "at a glance" that are linked to any other card.
The following Trellinator function would add a "Linked" label to any card that has at least one card linked in the attachments, which you could then use to filter the board:
You can read more about Trellinator here:
If you had to thrive a new habit during a lockdown, what would it be? Trello
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