It is my understanding that Transwarp will not work with a card like In'Cha, ie to give a 4/5 manuever performed with In'Cha the 6 manuever since you are not revealing the manuever dial you are just choosing a manuever to perform.
So it would not give a 4/5 manuever performed by the IND-Dom Flagship card a possible 6 straight as well?
"After your Flagship moves, you may target 1 other friendly ship within range 1 of your Flagship. Target ship immediately performs an extra white or green maneuver."
That is correct. It would not work.
Transwarp Drive (Federation/USS Excelsior Expansion)
During the Activation Phase, if your Maneuver Dial reveals a [Straight] 4 or a [Straight] 5 Maneuver, you may instead use a [Straight] 6 Maneuver.
In order for Transwarp Drive to work you have to reveal a 4/5 straight on the Manuver dial.......no dial reveal, no Transwarp Drive.