ErikJ972 said: "They really only devoted one hour to the chase.
But it felt like two.
"
It seems to me that much of the first episode was devoted to the event as well. I guess I'm thinking of the entire time from when Simpson was first found to be missing until he got to Rockingham as the "chase", even though law enforcement didn't know where he was for the first few hours.
Anyhow, that's how I got to two hours: counting two episodes. I would have expected the chase to wrap up by the end of the first episode.
They could have spent some of that air time on Ms. Simpson's funeral, which by all accounts was a drama in itself.