From Polygon:
During the stakeout, Watson and Holmes are forced to sit by each other in cramped quarters, and with nothing to do until the bride shows up, actually attempt to have a personal conversation that isn't at all work related.
Why is not used the preposition "to" at the end of the above sentence: "…that isn't at all work related to" or "that isn't at all related to work". Does the verb "relate to" not belong to the same category, like for example, "hide from", "protect from", "accuse of" and so on?