There is a reason they call it BBC and why women enjoy it. Perhaps many reasons
I do not see him "sleeping" in or bed but I could see where he would be in our bed for an extended time period. Once my wife gets going I do not see her asking him to get up and just leave, I think she would be chilling with him in bed and waiting for him to determine what he wants to do. That makes it a bit awkward for me if I am "done" but it comes with the territory so I have to be ready if he stays at the house for several hours.
And therein lies the rub because I will have to leave the alone while they are in bed so they could catch some "sleep" or start making love without me there and I walk in on it which actually sounds exciting.