Maybe this knowledge is not as common place as I thought since I need to explain it. The ISS makes an entire orbit in 90 mins. So even if you didn’t have any relay and the planet was massive you would never have an orbit so large you would be out of communication for that long. Instead we have a show writer who determined that around 12 hrs would be half the length of the day in earth like planet, and therefor it must take the ship a half day to return to communication . It’s silly levels of dumb.
I don’t really mind other than it amazes me that not a single person involved with the show knows enough to just simply correct it when producing the show. I am now officially over it , however.