What did your manager actually do when you brought up the interruptions? That's the real test here. If you told them in your last one on one that you get cut off and they still did it in the next meeting, then it's on them, not you. I'd start keeping a note of each time it happens with dates, because after a few weeks you have a pattern you can show HR or their boss if it keeps up.

Watched a guy lay them dry first, fixed mine in 2 jobs.

My clipboard lasted longer than most of my marriages, and it was about as useful near the end. Held onto that thing for years because it felt like real work, you know, flipping pages and feeling busy. Turns out being busy and being on top of stuff are two different animals. The handwritten delay thing hits home too, because my own notes were so messy I could not tell if a crew was late or if I just wrote like a drunk chicken. Good on Rick for saying it straight and good on you for actually listening instead of getting your feelings hurt. Sometimes the tool we trust the most is just the one hiding the most from us.