Q: Rear suspension component failure

It began with a failing wheel bearing about 5,000 miles ago. A few weeks ago, it started: a harsh grinding noise followed by a pop then a moment of nothing before the cycle repeated corespondent with forward speed of wheel (I'll refer to this later as the sound cycle). It lasted for only a few minutes because I stopped immediately to inspect. Without any alterations aside from wiggling a few things, I drove the vehicle home and the humming bearing failure noise began and progressed rapidly (around 20 miles to home). Lifted and pulled the hub. Inner bearing inner race was stuck to stub and bearing fell apart. Significant amounts of metal shavings present in the grease and middle metal part of bearing was almost entirely gone. Everything cleaned up and new bearings on, no problem for a few days. Yesterday, the sound cycle began again, but began as squeak that followed no pattern or cause (seemingly). Bushings look okay, bearings seem seated well. I do engine repairs so suspension got me

My car has 165000 miles.
My car has a manual transmission.