You need to understand that it’s a process. An element of the legislative branch is investigating elements of the executive branch and this is preliminary, as to the FBI’s participation in targeting political opponents. It’s actually about the fourth or fifth in the series, so far. The answers to these questions will be examined to determine the next steps to take, possible witnesses, subpoenas, etc. As for your concern about republicans being harsh to another republican, lots of people claim to be republicans in DC, like Comey. I think the tell in this hearing, as in most , is the amount of unresponsive answers.