As an offensive line, you must have five men work together as a cohesive unit to establish the line of scrimmage and generate a push in the running game while also effectively protecting the quarterback in pass protection against the opposing pass rush.
There is a lot of nuances that goes into offensive line play, not only from a schematic standpoint of all five guys going to the right spot and picking up the right assignments, but also each individual executing to proper technique when it comes to making their respective blocks.
With so many new faces along the OL last season, Pittsburgh got off to a shaky start upfront as was seen during the preseason against the Jaguars and to start the regular season against teams like the Bills and Eagles, looking overwhelmed in terms of adjusting to the scheme as well as the new technical teachings of OL Coach Pat Meyer.