I think there was also a paramedic couple on one of the previous series (one of the North West ones). I did wonder about how good an idea it is for them to work together all day (in very harrowing circumstances), and then go home together. But I suppose they at least can share and understand the pressures of the job, which might be a good thing.
TBH I found some of the interactions at the call centre in this episode a bit staged, almost scripted. I suppose they will be, up to a point, but it’s not something I really clocked in previous series, something just jarred a bit for me there.