I just had a new DVR installed to replace one of the two we had. So as a consequence we blank HD. So anyway we're adding series to it but also to the other DVR. Couple of night ago I added a series on one and my wife added the same series on the other and of course we ended up with two programs recorded which is understandable but then again I figured that having the two networked together they'd be smart enough to know that. Am I overestimating the AI here?