vacuum leak

took my intake off and came across this cracked old tub coming off the PCV, followed it behind the brake booster and found this.. can’t find where it should connect to. can anyone help me out?

Getting ready to do cap and rotor on my 4.3 and accidentally popped the line on the left (longer side going towards distributor) and noticed it’s badly cracked (not sure if it was me or if it was already cracked but I def made it worse). I have no idea what it is but if it’s a vacuum hose it’s...