The DVR is behaving as designed - splitting on silence. The best option is to turn off "Split on silence" and manually set a recording duration (taking into account the duration of potential ads).


Split on silence:

https://applian.com/replay-media-catcher/support/user_guide600#settings-dvr


Manual duration:

https://applian.com/replay-media-catcher/support/user_guide600#guide-digital-video-recorder


Alternately, one could recombine all of the recordings afterward.

https://applian.com/replay-media-catcher/support/user_guide600#split-and-combine