The longest session I've had was for 2 hours. It almost felt like I was sleeping with a long term girlfriend rather than a one night stand. Don't know how to imagine an overnighter with escorts, the most I might be able to do at my age is to cum 3 times max in one night if we were to do nothing but stay naked in bed. Pretty sure I've heard from escorts that does overnighters that they get blind drunk with their clients to the point that their clients can't even get hard because they were too intoxicated, and ended up not having sex while still getting paid.