A marathon was a schedule, not a playlist
A television marathon was assembled by a broadcaster, which chose when a run of episodes began and ended. Viewers could not simply select the next installment whenever they were ready: the channel’s schedule set the pace. To follow a story from the beginning, they had to tune in on time or wait for another airing. Recording could help, but only if someone had the equipment and had set it up in advance.
That made watching a small exercise in logistics. A viewer settling in for several episodes had to work around a fixed broadcast window, rather than pausing the program and picking it up later. The more closely the episodes connected, the more costly it could feel to miss one.
The breaks were part of the runtime
Commercials interrupted the story and lengthened the time viewers spent in front of the screen. Those pauses offered a chance to get up or handle something else, but they were not viewer-controlled: the show resumed when the broadcast did. A marathon therefore demanded more than attention to the episodes. It asked viewers to fit their day around a channel’s sequence of programs and ads.
On-demand viewing shifted that control to the audience. The contrast is easy to picture: instead of choosing when to pause a season, viewers once had to catch the broadcast where it was—and stay with it until the schedule moved on.
