by the way
US /baɪ ðə weɪ/
UK /baɪ ðə weɪ/

1.
a proposito, tra l'altro
used to introduce a topic or information that is not directly related to the current conversation but is considered relevant or interesting
:
•
By the way, did you hear about Sarah's new job?
A proposito, hai sentito del nuovo lavoro di Sarah?
•
I need to go to the store. By the way, do you need anything?
Devo andare al negozio. A proposito, ti serve qualcosa?