ORCHARD PARK, N.Y. — The Buffalo Bills and the Pittsburgh Steelers have asked the NFL to approve joint practice sessions during training camp this season and next year.

Buffalo coach Doug Marrone said holding practices against another team is something he’s done in the past and “truly believes in.”

The Steelers would host the Bills this summer at Saint Vincent College in Latrobe, Pa., then would visit the Bills’ camp at St. John Fisher College outside Rochester, N.Y. in 2015. Exact dates will be determined.