"This Is Us" fans were heartened when Jack Pearson (Milo Ventimiglia) survived the raging fire that consumed the family home, only to be shattered by his later death from smoke inhalation.

"Grey's Anatomy" fans were ready for the revelation, since they were already familiar with the subject.

After 14 seasons and counting, "Grey's" has pretty much seen it all. One thing they saw back in Season 6 was a woman who came into the ER after a hotel fire, suffering burns. When she later died, her death was traced back to Dr. April Kepner (Sarah Drew) failing to check her throat, which turned out to contain soot. That soot led to the chain reaction that shut down the patients' organs and killed her. April was fired.

One "Grey's" fans tweeted that April Kepner would've saved Jack on "This Is Us," and Sarah Drew replied:

"Grey's Anatomy" fans do know just enough to be dangerous as armchair physicians.

Of course, Jack's storyline not only happened on NBC, it happened in the 1990s. "Grey's" airs on ABC, and in the '90s April Kepner was probably a teenager like the Pearson Big Three.

Thanks to the Olympics, "This Is Us" Season 2 is off the air until Tuesday, Feb. 27 at 9 p.m. on NBC. "Grey's Anatomy" Season 14 won't return until Thursday, March 1 (blame "The Bachelor Winter Games") at 8 p.m. on ABC.

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