Question for experenced indoor growers

I have a few fem girl scout cookies in final stage of flower, about 2 weeks ago I started 5 fem washing machine in with them to start flowering. My question is: Is it possible for my gsc to pollonate my other 5 that's just starting. I read somewhere during final stages of a plant it goes through several stages of reproduction as it's dying. Didn't look into it too much. Just wondering if anyone ever heard anything about it.

Don’t let your GSC’s over mature or stress out, you shouldn’t have a problem.