No dude, a broadcast just sends the note out to more relays, it doesnât âboostâ
The note to the top of everyoneâs chronological feed. A ârepostâ(boost) not only broadcasts a note to your relays, it also changes the chronological time on the relays putting it at the top of everyoneâs feed.
Broadcasting is used to get a note saved on more relays and therefore make it more searchable.
Renote/repost/boost is used to increase engagement.