I doubt it. Remember this, the IG got the green light to start investigating in January of 2017. He got full power and support upon sessions confirmation in March.
Also of note was the whole discussion about Strzok chatting with Aaron zelby about the Special Counsel investigation before it was even started...
go back and read the Strzok texts, you will see his tone start to change after the SC was named.
If he did he had to refer it. And since RR appointed the SC it wasn't referred to him.
Is it possible they've been giving Mueller rope all this time?
Ironically that was one day after the predawn raid of Paul Manafort.
I believe letting Mueller know the IG knew about Strzok conduct was a warning shot.
They keep giving Mueller rope and he keeps hanging himself and others.
This is going to be good...