How many other people are on this Zoom meeting? If you’re talking three people, that’s one thing. If you’re talking 30 people, that’s another.
Honestly, making an issue of it at this point seems counterproductive? After all, she can pine all she wants to, what matters is how he feels about it. If he’s well and truly over her and it doesn’t seem like he’s connecting with her outside of the meetings, maybe better to trust for now? His recovery program is working for him and disrupting that for this reason seems like a baby and bath water situation?
TL;DR...give it time?