New 4K Channels

1390 and 1391 are recent adds to the guide as 4Ks 5 and 6.  They seem to be duplicates of 1354/55, running the same Fox Sports promo loop.  Any idea if they will carry anything different than what we get on 1354/55?   There's nothing listed for them using the voice remote to search for 4K.  1354 has a couple of upcoming Fox football games and 1356 shows a couple from NBC.