If Dallas can maintain the current OL, the similarities to The Hogs of the 1980's cannot be dismissed.
The Commanders had a dominant OL which contributed to Super Bowl victories with 3 different QB's (Theismann, Williams, & Rypien).
Granted, the Commanders had Hall Famer Joe Gibbs as head coach with Joe Bugel & Jim Hanifan as OL coaches.
In the current diluted era of the NFL with free agency and the salary cap, an all-world OL can potentially be a decisive factor in winning championships -- even with solid not magnificent QB performance.
The talent is there, it is up the coaching staff and front office to retain the group and develop a complete team to complement the all-powerful OL.