There are three areas of investigation that can lead to impeachment . . . Flynn . . . Emoluments . . . Russia.
I will be flabbergasted if even one Republican asks Comey even one single question about any of these topics. I expect most of the questions from Republicans to be about Clinton's emails.
Rubio was asking the intel chiefs in today's hearing about whether they'd been asked by anyone to influence an ongoing investigation. So no, he didn't actually say "Flynn", but it's clear that that's what he was talking about.