Re-connecting with door slammers varies widely. I have read a lot from infj's here about leaving the door open sometimes. The problem with that is for some, it's too late.
In my situation of course, it's all about getting my stuff and moving on. I did say I would help her non-financially from a distance in the future after that and only after that.
A lot depends on type of door slam and what loose ends we're left or not and damage caused or not.
If there were no to little loose ends, reappearing down the road is much more plausible. Just because a door is left open slight sometimes, doesn't mean the other person wants to take it nor wants to go to the trouble to do the work.
Even if I had no loose ends, it is still 50/50 and not a non-infj rescuing an infj. It's not all about the infj, nor is it all about the other person either.
I can't speak for other non-infj's but for me, when loose ends exist, my feelings only harden more over time. When no loose ends exist, my type quickly moves on to other things in life and reappearing down the road is a 50/50 roll of dice for infj. If I am in relationship with someone else or even just beginning one, you don't have a chance. You also may not have a chance even if I'm single at the time of reappearance. But if I'm single and nothing bad happened previously, there is always a chance. But not a rescuer situation. The other person needs to be strong and independent. Previously I reconnected with my infj a few times over the years because we didn't have any past issues. My type is very open to that.