Yes. Digital channels on cable use 1-125, and are remapped by the box to whatever your cable company wants to call them. But they are contained in that 1-125 space, generally with multiple subchannels on an active channel. For instance, I have 107-1 which is CBS and 107-2 which is PBS, and then 111-1 which is NBC and 111-2 which is FOX. I've even got a channel in the 70's that has like 30+ subchannels and is actually the music choice channels.
Now for OTA, I've got 3 sub-channels for ABC... 10-1, 10-2, and 10-3. Recording OTA or QAM provides the same results. All subchannels are recorded regardless. So if for example I need a show on both NBC and FOX at the same time I'm in luck. Regardless though, I will get both NBC and Fox in the recording. And if I record ABC OTA, I will get all three subchannels even though the HD show I wanted is only on 10-1.
Someday maybe I'll actually WATCH my projector...