I would say both.
Often we guys are nervous, and not keeping track of how much time is passing when talking and trying to get comfortable. Knowing this, the SP does have a certain responsibility to maybe make the client aware of the time, but she can only do so much. Otherwise she is seen as being overly pushy or just wanting to get it over with, or the client actually just wants to talk.
In the end, the client has to take responsibility for their own actions. If the lady has made them aware of the time, and they still chose to talk until there is no time left, that was their choice, and no one else's.
So maybe the SP should lead the horse to water, but ultimately that horse has to take the drink himself.
Often we guys are nervous, and not keeping track of how much time is passing when talking and trying to get comfortable. Knowing this, the SP does have a certain responsibility to maybe make the client aware of the time, but she can only do so much. Otherwise she is seen as being overly pushy or just wanting to get it over with, or the client actually just wants to talk.
In the end, the client has to take responsibility for their own actions. If the lady has made them aware of the time, and they still chose to talk until there is no time left, that was their choice, and no one else's.
So maybe the SP should lead the horse to water, but ultimately that horse has to take the drink himself.