Our internal 'recruitment services' dept is all outsourced/contracted. They mask this internally through cheap tricks (don't present the staff in exactly the same manner as contractors in our internal system, etc), but do a little research and you'll figure out what's going on. I'm guessing they have hundreds, possibly thousands of contractors on the payroll running the operation.
They literally don't give a shit how it all goes down. I've escalated situations up the chain multiple hops and get nothing back, just silence. No acknowledgement, nothing. Talk to other Director/VP level friends in HR and they don't even know who to talk to.
I run a small to mid size department (think around 50 FTEs and some contract/consultant staff) and when we get openings posted, we run the recruiting ourselves and just instruct the internal recruitment team when we're ready to write/extend offers. They are usually still working on the initial candidate screen doing who knows what, dicking people around with video interviews and stupid phone screens.
Corporate HR and recruiting is totally broken - avoid at all costs.