No longer getting field banter with multiple party 'pairs' (XBOX)

So in my second Veilguard run on my XBSX, I've been trying to get more field banter than I did in the last one since it's all delightful, so periodically I'll grab a pair I don't use together as often and run through some reliable 'banter trigger' spots/ wait a while/ do another one/ etc etc.

So a fair bit ago in my current run, I noticed that suddenly I couldn't get banter between Davrin and Harding to trigger anymore. I was pretty puzzled, since I was pretty sure they couldn't be 'out' of options at that point. I tried a few things- reloading, trying different banter spots, getting banter with different party members and trying them again, etc- but eventually gave up and kept going, hoping that eventually it would sort itself out (but as of where I am now- far enough in the game that I have a couple party members with Hero of the Veilguard status and more to come soon- I still can't get any banter from them).

What's made this matter more urgent is now I've got another pair that suddenly isn't triggering banter either- Taash and Emmrich. It's bad enough I'm missing out on one 'pair' of banter, but two pairs? And Emmrich and Taash have great banter. (And again, they're not out of options! Hell, back with Davrin/Harding, even if I WAS out at that point, there's been enough major missions/companion stuff for both of them that new banter should have been added at some point since the issue started, but nope, still radio silence when I take them out)

It's really killing my motivation to play any further. What if I lose still more pairs? Please tell me there's a way to sort this out.