Lunafreya is really the queen of enabling Free turns. I used her here to allow Selphie and Machina to set up instantly
No Commentary here because the approach is very similar to my Terra 0T run. It has to be one turn here since Machina BT mode has to take a turn.
Setup
Machina with 5/5 UW, FR30. Prishe LDCA. This can be swapped with Alisaie or General Leo LDCA
Selphie with 5/5 UW. Keiss LDCA. If you don't have this just set a Debuffing call like Seymour, Laguna or Raijin
Lunafreya with 5/5 UW and FR30. DKC call. If you don't have this set a call that can launch at least once.
Ramuh summon for the paralysis. Kam friend.
0:00 Lunafreya's setup
Reset until Luna goes first followed by Selphie
Follow what I do to setup so that she can charge both summon and force gauge by the end of her turn. What I like to do is go BT+ with 1 LD remaining so that the final LD gives everyone 3T quick prayer
I use Luna AA before popping summon
3:50 Summon Mode
Luna uses S2
Selphie uses Wall
Selphie uses LD
Selphie uses Keiss LDCA
Selphie uses LD
Swap Selphie out and Kam uses FR
5:15 Machina BT Mode
Go BT+ then LD then Prishe LDCA before popping BT mode
I used Machina EX at the final turn to have better spread damage. This allows me to finish both bosses together with the BT finisher