Shedding question

As some know on these forums, I have a ball python and red tailed boa. It seems whenever one goes into the shed, the other one does too. Does that strike anyone as odd or unusual or does this happen from time to time?

I thought that I was the only one that this happens to, it seem that out of the 12 snakes I have 6-7 go into shed with in days of eachother, it never fails!

Hormones in the air possibly??? Anyone have any ideas??

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My BP and gopher snake both shed the same week we were on vacation in Aug. But they are in two totally different rooms that aren't that close to each other. I can't imagine how it was anything except coincidence.