https://www.theringer.com/2020/9/8/2...ensive-revival
"Colbert stressed that the Steelers operated as close to normal as they could this offseason, though sometimes it was impossible. Colbert discussed how hard it is for coaches not to be able to see players’ eyes when they are teaching a concept, or how to simply teach a physical technique over Zoom when physicality isn’t allowed. One team-building adjustment Colbert made was that “we went deeper in the XFL players because when we thought about the college free agents, we knew less about them because we didn’t have pro days, didn’t have physicals. The XFL players were more NFL-ready, so that was the one thing we did differently.” The team signed nine XFL players."