Did this twice when I first started punting.
Done it at Indian Palace when they used to have two girls working, I couldn't pick between the two girls and I had only brought enough for the one punt. I finished one session, went to get a coffee but was still feeling horny and so went back around 20mins later and saw the other other.
Also had a back to back session at Debbie in Anerley as a Birthday present to myself, here I was looking to play with the regular girl who was working that day and I knew that Debbie would be there too which was about 30-45mins after the first session.