By default, ancs4linux hijacks the pairing process so that the phone won't be allowed to redirect its audio to the PC. You can control this hijack via ancs4linux-ctl {enable,disable}-pairing.
What will happen after disable? The notifications will stop? Will I need to repeat the pairing again?
Can you explain this in more details?
What will happen after
disable? The notifications will stop? Will I need to repeat the pairing again?