How do I get over the annoyance and frustration of this? My DH frequently does it and it's starting to really get to me. I now limit making conversation at the dinner table as I can't bear to hear his response whilst half chewed food is displayed to me. Not to mention the accompanying noises.
I think I've become more aware of it since lockdown as we're eating every meal together and I'm trying to encourage good table manners in the DCs. So I'm constantly telling them to not talk with mouth full, chew with mouth closed. I sometimes say the same to him (or ask, at least). But it doesn't last long, if at all.