Re: Time spent interacting and day 2's: relation?
There is definitely a correlation with that. You are correct in that a shorter interaction gives you a less likely chance for her to respond back, and that there is a certain point where your chances are best and then get worst.
There is a reason behind this, and that reason is the energy in the interaction. Energy is how entertaining and positive the interaction is. Number closes, kiss-closes, f-closes, everything in pua is driven by energy. Your chances with everything are best when the energy of the interaction is at it's highest.
Let's apply that to an interaction where the goal is a second interaction.
Suppose you did only go one minute. The energy may be building up, but it won't be nearly enough to motivate her to want to talk to you again. Now we go to the high of the conversation, when everyone is laughing and having the best time of your life, and you decide to just cut it off and leave. She's going to want to talk to you again, and she will do what it takes to talk to you again. Finally, we come to the downhill slope. The conversation has been dragging on, the high is gone, and she is bored. She has gotten her fill of the interaction, and she isn't really interested in trying to continue your interaction.
So there you have it: your entire question explained in a nutshell.
"There is no better than adversity. Every defeat, every heartbreak, every loss, contains its own seed, its own lesson on how to improve your performance the next time." - Malcolm X