According to an old (Jan 2020)
piece of information we have there are no Dylan's events on day 23 (PD 16).
Nathalie, we don't know because her schedule is kind of random, she will come twice a week according to her college schedule
Python:
s "So, how does your schedule look at college? Do you think you'll be able to manage coming here twice a week for about three hours?"
nat "Yes, of course! But the days might need to vary, if that's OK."
so untill we have any intel or some hints are dropped in the story we can't really say.
And Alyssa is due to come back only on Tuesday PD 17 according to what is said in the story (
"I think Tuesday next week when our boys have soccer practice will be the earliest we can see each other again.")
We are collecting all these pieces of info
here