I recently purchase a Wacom graphics tablet to use during Zoom meetings.
It is astonishing how often there is a call going, with parties from different parts of the firm, where it's clear that everyone has a different idea about what the problem is.
Just being able to draw out the "flow" of the components or even making a list helps everyone first visualize and then understand the problem. Zoom's whiteboard feature is great at this as it allows you to undo, erase "objects" (e.g. a line you just drew instead of the pixels) and you can easily save what you drew.
PS If you don't have a graphics tablet, just listing out what the issues are in a shared Excel or Google Sheets also works wonders.