Everyone loved that moment in Hawkeye when Clint used the giant arrow, which utilizes Pym particles that are usually used by Ant-Man, but it does create a plot hole for the wider Infinity Saga.
It’s nothing too drastic and likely won’t be an issue for a lot of people, but having Clint using those arrows really doesn’t make a whole lot of sense when you look at the wider MCU timeline, and you can continue reading down below to see why this Hawkeye moment creates a plot hole.