[This article includes SPOILERS for Agents of S.H.I.E.L.D. 'The Patriot'.]

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The most recent episode of Marvel's Agents of S.H.I.E.L.D., 'The Patriot', was full of surprises for fans of the popular sci-fi/spy series, from the full truth about the nature of Director Jeffrey Mace's superhuman powers coming to light to the disturbing revelation about Leo Fitz's continued fixation on the malevolent LMD Aida. But the most eyebrow-raising reveal may have been reserved for eagle-eyed viewers who've also kept current with Marvel's gritty Netflix offerings -- specifically Luke Cage.

In the opening scene, S.H.I.E.L.D. director Mace is holding a press conference formally recognizing no-longer-AWOL Agent Daisy Johnson (aka "Quake," formerly Skye) as both an official Agent and a hero -- all in the context of reminding the public that she (and Mace himself) are Inhumans and thus textbook examples of the agency's position that the race of super-powered persons aren't to be feared. The conference is interrupted by a sniper attack connected to the anti-Inhuman hate group The Watchdogs, who attempts to assassinate Mace... using a bullet that drills into its target (in this case, a speaker's podium) before exploding.

High tech weaponry is, of course, nothing new for Agents of S.H.I.E.L.D., which typically goes light on the costumes and creature effects common to the rest of the Marvel Cinematic Universe in favor of science-fiction weaponry and bizarre gadgets. But the specific behavior of this assassin's bullet (not explicitly acknowledged by any of the onscreen characters, who had other issues to solve) looked awfully familiar to fans who'd also watched Marvel's Netflix series Luke Cage; where a major season 1 plot point revolved around ammunition with that identical functionality called "Judas Bullets."

While it has not yet been officially confirmed, the depiction of the bullet hit in the episode (a "normal" bullet-strike, followed by a mechanical drilling sound and sparks erupting from the impact-area and ultimately a violent explosion) was indeed almost a beat-for-beat mirror of how Judas Bullet's worked on Luke Cage. There, the expensive rounds (a creation of Hammer Industries using repurposed Chitauri metal scavenged from the Battle of New York) are depicted as the only weaponry capable of piercing Cage's bullet-proof skin and inflicting internal damage beyond the reach of his superhuman healing abilities -- so it makes sense that the same strategy might be employed against Mace, who possesses super-strength and enhanced abilities comparable to that of Captain America.

While both Agents of S.H.I.E.L.D. and the various Marvel Netflix series both routinely acknowledge the events of the main Cinematic Universe features, the feature films almost never do the same and the two separate television tracks (Netflix versus network) have only directly acknowledged each other's existence once before via the shared presence of the "Dogs of Hell" biker gang. This would make Judas Bullets (if that is in fact what the would-be Watchdog sniper fired) by default the first official onscreen connection between Cage and a non-Netflix Marvel property. If so, it could suggest that further cross-reference might be in the offing. Notably, a popular theory among Marvel Netflix fans is that the "I" in "IGH" -- an enigmatic paramilitary organization with an interest in chemically-induced super-powers who played a role in the first season of Jessica Jones -- might stand for "Inhumans," whose MCU mythos began on Agents of S.H.I.E.L.D. and is expanding into its own series now in development.

Stick with Screen Rant for more details on this potential new connection between Marvel TV projects as it develops.

Agents of S.H.I.E.L.D. continues next Tuesday with 'Wake Up' @10pm on ABC.

Daredevil season 1 and 2, Jessica Jones season 1, and Luke Cage season 1 are now available on Netflix. Iron Fist will premiere on March 17. The Defenders and The Punisher will arrive at some point this year. Premiere dates for the newest seasons of Jessica JonesDaredevil, and Luke Cage have not yet been revealed.