A running order is not an agenda
The agenda is on the page and is written for the registrant: what happens, roughly when. The running order is in front of you and is written for the people in the room: who is speaking, which minute it starts, how long they have, what happens if they overrun.
Most sessions that finish late had an agenda and no running order. The difference shows up around minute thirty-five, when the speaker is enjoying themselves, the host is deciding whether to interrupt, and nobody has written down in advance what the session is allowed to lose.