Hey Ned! Bit rate is not something you can detect from an incoming digital signal. I think you need to set the 722 to record 16 bits (no dither) from the digital input. It should automatically lock to the correct sample rate. I'm betting that the last 8 bits of the "24/44.1" you got from this run with the DAT > 722 are empty.
BTW, the 24/96 Garaj stuff will be up very shortly. I'd be interested in hearing a track of yours as well.