I have read your two links and I have the maximum bit rate for the three TVGOS streams.
Legacy (0x06) 46624 bits per second
TVG1 (0x05) 28576 bits per second
TVG2 (0x05) 1504 bits per second
If I remember correctly Rovi requires a reserve of about 125,000 bits per second of the host stations 19.4 million bits per second feed.
In the case of KEYE, Their biggest problem is they are also multiplexing telemundo in their 6 megahertz channel which is consuming about...