I made the same mistake by not looking carefully at an ANTEK transformer diagram last week or so.
The high voltage outputs are not two separate windings. The 275 is an extension off the 190V, or you could look at it as the 190 is a tap off the 275. the difference between them also offers 115V.
I don't know though, can two bridges be used on a tapped coil setup?
EDIT: Hmm, discussed here: https://antiqueradios.com/forums/viewtopic.php?t=378174