The way to watch OTA on TV2 is to start DVRing the OTA on TV1, and have TV2 watch the DVR'd program. A few seconds delay, that's all.
... Only in single mode can I get the 622 to output an anamorphic 4x3 image of 16x9 content.
TV2 in dual mode restricts the image to letterboxed 4x3 or zoomed/cropped 4x3. The 622 needs an anamorphic output in dual mode option for TV2.