TMax400-2 (TMY-2) does not have the UV layer in it. It is only TMax100 (TMX) which has the UV layer.
When I first learned about the new TMY-2 I was told that the 35mm and 120 versions of the film would have a UV layer, but that the sheet film would not. However, the new TMY 120 film, which I was asked to test, does not appear to have a UV coating, or if so, it is much less actinic than the coating on Tmax-100 film. When I measure the UV density of TMY and the test film, OOO, developed at the same time in the same developer, the B+F density of the OOO film measures about log 0.10 higher (1/3 of a stop), even though the overall contrast of this film is lower than TMY. If this is indeed due to a UV coating the effect is much less than that of TMAX-100, where the B+F density with a UV densitometers measures about log .90, or three full stops.
The TMY-2 in LF that I have tested in 4X5 size, definitely does not have a UV coating.
Sandy