Besides the connections the software doesn’t work between those two out of the box. My mom bought 2k MacBook Pro from the Apple store and a 1100 Iphone xs and we got home and plugged it in to back up her saved backup and iTunes wouldn’t let us. I can’t recall the exact problem but the solution was downloading the latest software for both devices. Several hours later it was working but out of the box? So disappointing.
That seems like a negligible issue. It's really not unusual that both device and software need to be on the same or latest version to work as intended.