Is it coincidence or evidence of a plot?
It probably matters which version of the rules the UkraineGate whistleblower was operating under, since under one set of rules hearsay is not allowed, and other another it is.
For the time being, however, critical details about the rules change are unknown. And thus the status and validity of the whistleblower complaint against the president remain questionable.
If I had to guess, I’d recommend erring on the side of conspiracy theory. This whole topic is looking more and more like a Wrestlemania saga.