"This wasn't actually hard to deduce." Greed sighed. "Creatures within a universe cannot observe its current state from a higher perspective. Spider-Man might not have known that the time loop in his universe was caused by two universes getting stuck together."
"Spider-Man knew that his world's time was constantly being reset. Although the point at which we appeared was random to us, to Spider-Man, a resident of that universe, the sign of a reset was the Zombie Sentinels' arrival."
"So dealing with the Zombie Sentinels was a good approach."
"There were two ways to deal with the Zombie Sentinels: either prevent him from infecting the Avengers, or prevent him from reaching the other universe."
"But the latter was actually a false proposition. Even if the Zombie Sentinels did not go, The Watcher would throw other survivors over. After all, his original intention was to create a cycle between the two universes and prevent the zombie virus from spreading outward."
"During the fourth reset, Spider-Man had already removed the Zombie Sentinels' brain. Yet during the fifth reset, it was still the Zombie Sentinels who endangered this universe. That meant simply removing the brain was useless. The Watcher was very likely interfering."
"So only one method remained: find a way to keep the Zombie Sentinels from infecting anyone in this universe."
"During the fifth reset, there was an additional clue." Greed frowned. "That static Tony heard through the emergency communicator was very likely a new research result Spider-Man developed during the fifth reset."
"Tony eventually drew a pattern resembling a waveform. That meant the transmission was a wave, and one area of research for a brain in a jar was brainwaves. I suspect that wave might trigger some kind of reaction with the Zombie Sentinels' brain."
"Then who should go for the