Bluetooth Phone Audio loss after Aftermarket ICE

Apr 4, 2021
2
0
I have pulled out the usueless Seat radio and installed an aftermarket ICE unit, the bluetooth mic on the new ICE is crap so im trying to connect to the cars intergrated bluetooth for phone calls

i CAN connect but i cant hear anything when i make a call, anyone have any ideas, ovioulsy i have taken all the speakers off the original system but is there a way to patch the bluetooth output into my new stereo?