This has happened a few times. I have the kids in school hols as I work term-time only. We limit device time to 2 sessions, morning and before tea (8 - too young to self-regulate and would stay on for hours and hours if not).
When we are all home, he will pop in occasionally to see them (lovely). If I nip off for 5 mins to do something/loo/cuppa, he'll tell them they can have an extra screen time session then in the next 30 seconds, he heads off back to work.
I raise this with him and tell him he doesn't have to worry about all that, just come and say hello and relax and enjoy a quick play with them as I'm the one who's been looking after them so I know if they need XYZ at certain times, going by their mood, what we've done or are about to do etc. What if I wanted to take them out/not have screens/do something else next? I've asked him to divert them to me.
He got defensive and now he's in a huff.
It's tricky to navigate as he wants to be with them (he's a great Dad) but he has to work in the next room. I get that. He doesn't work clear hours (flex self-employed) so we can't set a routine. AIBU?