Ken Starr started his investigation in to shady real estate and ended on a BJ. Mueller started his investigation on Russian interference with the 2016 election and ended CONSIDERABLY earlier even tho there are blatant instances of GOP members being paid off or compromised by Russia. Hell, A SCOTUS member retired after a meeting with Trump. Yeah, COMPLETELY coincidental!
Or that Trump's son met with Russians to try to get dirt about Clinton and repeatedly lied about both the meeting and purpose.
I guess the ironic thing would be if this ended up in a similar fashion to the Clinton email server - not enough to formally charge but with each side thinking it still enough to "lock them up"