We (Boston) used to do it all like that in sparring class. The iron body conditioning-arms, legs and etc. Fighting forms at full speed and contact. When I first started sparring classes years ago, chin na and takedowns were practiced as well. But now those things are just things Master Yang expect you to do on your own time with your classmates outside of sparring class. Most of what Master Yang is pushing for in the sparring class itself is footwork, speed and reactions. Spending an hour on the actual sparring work with a minum of 4 minute rounds semi to full contact. The first half hour, is the warm up, light stretching, footwork and speed drills.
But I think you guys in Andover are on the right track. I'm guessing Alex is probably training you guys like how he used to train sparring under Master Yang. I think you got a great routine of conditioning and drills by what you described you guys are doing in Andover sparring classes. Keep it up.