they were done in 12 minutes and we still had 45 to go... wtf do we do

M40 / F39, ls couple maybe 18 months, we play with two regular couples and occasionally meet new ppl off SLS. last month new couple, met them at a meet and greet in phoenix, decent vibe, agreed to a separate room hotel night. we go into our room, they go into theirs. 12 minutes later i hear them in the hallway laughing. like fully dressed and out. we were nowhere near done. we were like 12 min INTO our session. we kept going obviously but the whole time in my head i was like "they are sitting in the lobby right now, this is awkward". my wife later said she felt the same. we wrapped up faster than we wanted to bc of it. after, the four of us met up and they were super chill about it like "no rush we just had a quick one" but it threw off the whole vibe of the night. felt unbalanced. is this just a "new partners" thing where you dont know each others rhythm yet. is there a way to set expectations beforehand like "we usually go 45 min" without sounding clinical. does same room solve this bc you can kind of stay in sync naturally. or do we just need to relax and stop tracking what they're doing