I can only assume that for live network programming, a station can only pass it along once it gets it from the originating net. So if they're getting it in the first place from satellite and then DiSH is picking it up offair and re-uplinking it, there's going to be a lag of some sort. The idea that stations hold off on program starts to insert extra ads breaks down in that the program would then run up against the top of the next hour or half hour- couldn't they come out equal by starting the show "on time" and then putting the "extra" ads at the tail end? Or maybe you're figuring that the station is counting on people tuning in and paying more attention at a program's anticipated start than at the end, where they may tune out to another channel or take a restroom break...and so they take advantage of that. A moviehouse likely couldn't command much of an ask to run all those commercials they now do after the end credits rather than before they run the movie.