Right now my company seems to be only hiring people they already know or have worked with before. Every single hire in the last 4 months I've seen get on-boarded has been back-channeled. I've had 4 direct referrals and none of them have gotten in but all made it to the final round just to be surpassed by someone the hiring manager already knew and liked from their previous teams. Even with a strong referral it's hard!