"So why are they doing it then?"
Easy answer: Because they can.
Look at how they dragged out Bolton ... they eventually got lucky because one of dimbulb RINOs fell for their lies.
They will do all they can to drag this out even if confirmation is inevitable.
The obstructionist Dems are scrambling to figure something out because they know that the majority of the Senate clearly recognizes what a great nominee Alito is.