TT sells out faster and doesn’t seem to have as many “extra” drops as Remy. Also, it’s harder to nail down a specific time to fit into other plans. I found booking my
Genie+ before $ILL easier to manage the schedule, so I would book TT first (it’s gone into early evening times within a few minutes after 7am almost every day the past month).
You don’t need two people/phones. Just remember that if for some reason you run into IT issues or miss either at 7am, there is another drop of times shortly after (around 7:08/10 for Genie+ (TT) and 7:17/20 for $ILL (Remy)).
I would keep refreshing until the time is an hour or so before your preferred time (it tends to shift as you go through the booking screens).
Good luck