I think one think generally missed in the analysis thus far is: why did Toney line up offside? I'd postulate that it's because his job in that play was to get out in front of Kelce to set the pick, the closer he is to the LOS (or over it) the quicker he gets into position for that. That was probably what he was solely focused on, finding the guy with coverage on Kelce to go get in his way, and not thinking about where he was relative to the LOS.