Stamina mismatch in age gap play, how do you handle the middle bit gracefully

gonna ask something practical bc i havent seen it talked about much. me 53, dh 56, in the LS 9 yrs, and over the last 18 months weve started playing more with couples in their 30s. the matches have been great vibes wise, no drama on age at all. what HAS been tricky is the middle of the night, like the 2nd hour of play, when stamina differences just become a fact in the room and nobody quite knows how to acknowledge it. what happens is — the 30s couple are still going, dh has tapped out earlier than hed like to (which is totally normal at his age but he hates it), im still going but want to slow down, the other guy is still going, the other woman is still going, and now weve got this awkward configuration where 3 ppl have momentum and 2 have less and nobody wants to be the one to call a pause. last time it happened dh just kinda... left the room. went and showered. came back 20 mins later in a robe and we all kept going. it worked but i could tell he felt weird about it. i dont think we should stop playing with younger couples bc this is honestly the only friction and the rest is great. but i wish there was a smoother way to handle the energy gap mid-play without making it a Thing. questions for ppl who play across age gaps regularly — do you have rituals, signals, a known "intermission" thing? do you just communicate openly at the start "hey energy levels may diverge thats ok"? do you play in formats where breaks are built in eg longer evenings with food breaks? how do you keep it from being the older partners awkwardly bowing out while the younger ones keep going. not looking for "just take more breaks", looking for actual scripts and structures ppl use.