You typically see teams use a Heads Front when they're in Split Safety coverage, because it gives them two 2-gap players, in addition to how it allows them to dictate the path of the back.
In this clip, OU uses a push mechanic, where both 2Ts are working to stay on the front half of the block. The playside 2T is able to cut the play off, and the PS backer can then fit and fold off the back.