I figure this is worth starting a new thread since I may seem to have found a solution for the crummy stock bluetooth audio/HFL to work more accurately and consistently:

I got a free/unwanted Amazon Echo Auto months back and wanted to test it out. I ended up setting the connection over bluetooth – all while knowing how unreliable the stock bluetooth is in our cars. And until this day, my phone/Alexa/TSX oem bluetooth connection has been…working…like normal...as it should...

Not sure how this threesome witchcraft of a connection is making it work but its been nearly 7 months of seamless Bluetooth reliability. Note there are some delays, maybe like 30s at most and a connection hiccup, but re-pairs itself. And I haven’t had to manually re-pair since adding it to the car.

For anyone that enjoys a wireless experience as much as I do, I hope you find this helpful!

For reference I have 2012 TSX Sport Wagon w/ TECH & iPhone 12 mini. Maybe it’ll help with the HFL in other models?