>>5755783 (lb)

Exactly.

And depending on the strength of the decibel leveling. Only other sounds producing similar decibels would be audible in the clip.

>>5755866

Agreed.

But that would mean that he is playing music from his car and his phone simultaniously while driving.

It's obvious from the first part that it is his car playing. (music lowers when he exits)

At no time do we see him switch to phone.

And when he returns the car speakers are still playing at same volume.