How to monitor Updates/Discussions not responded to

Problem statement - As a Project Manager, I review the statuses on boards and ask for updates. I need to be able to see that I left 10 requests across 5 boards and only 4 were responded to. Where can I easily see who has responded to my requests and which ones remain unanswered. These requests are submitted through the discussion bubble or by clicking the fold down tab in the upper right corner of a status field.