VIDEO : Russos Explain 'Ultron' MCU Plot Hole

The Russo Brothers, directors of 'Infinity War' have explained a major Marvel plot hole.
The plot hole extends back to the movie 'Age of Ultron.'
In that movie, fans got their first glimpse of Thanos.
He puts on the Infinity Gauntlet.
But, in Infinity War, we meet the man who forged the gauntlet.
He implies he only recently made the gauntlet for Thanos.
The Russos explained that there is no time stamp on the 'Ultron' scene.
It could have taken place in the future or the past.