Two camera rolls on one reel (800 ft.)

From DuArt film box: 
Lab order: 058756
Total lab flats: 5
Title: I'll Make Me a World
Date Rec.: 12/22/97
[film] Type: "7297"
Camera Rolls: 913.84-913.85
Footage: [blank] but roll is approx. 800 ft. 
Total Outs: 0
Ubit: 009130045
Time code Hr.: 22 HR

From lab reports: 
Roll#: 913-84
Mag.#: 2650
Film Type/emul.: 7297-167-5103-73-3
Start SR: 913-57
Roll contains scene no. 12-14. 
Note: "Process ONLY.  Prep for Tape xfer.