That's why CBS should build that into the Guide date they send. I don't fault Dish for this.
It WOULD be nice to just be able to pad PTAT beyond its 5 minutes though. It could be anything on any channel that would cause a delay, and unless you've set the timer for the recording, you're going to miss the end of that last program. Which is why I always set timers for shows that I watch all the time, but if something caught my eye for which I hadn't specifically set a timer, I could miss the end of it.