Rogue One had a few scenes with radio operators talking in real-time with ships in other systems, which seemed a bit non Star Wars to me.

I can’t think of any examples from the OT of communications between systems other than the Emperor’s hologram call to Vader in ESB (and there are similar long distance hologram communications in the PT). Maybe there are some implied off-screen?

If ships were equipped with long distance communicators there are many times it would have been useful, Han could have called ahead to Bespin, Luke could have called The Falcon from Degobah to see if his vision was true, The Rebel fleet could have waited safely until the Endor strike team called to say the shield is down, Qui-Gon could have called the council/senate as soon as they had cleared the communications blackout on Naboo. Having Long distance communications really negates the need for a lot of travelling.

I have always assumed the Empire had full control of the communications network so the Rebels couldn’t use it, I guess you could say that the rebels were just unwilling to use it openly for fear of interception/detection, but this is not the case in Rogue One.

Not sure what I’m trying to get at but Star Wars is effectively a Fantasy/Adventure setting and travelling from place to place is integral to that, having the ability to make phone calls rather than go on adventurous quests just breaks that feel a bit.