Trump was clearly confused about who was called, when, and why.
If we believe Anthony Ornato, Meadows contacted DC Mayor on Trump's behalf. It was not about protecting the Capital. In his cited words.
Trump claims he talked to Nancy Pelosi about protecting the Capital. On one occasion, he confused Pelosi with Nikki Haley.
General Milley says Meadows made the calls only after VP Pence had contacted Christopher Miller from the Capital. And it was for optics.
Pelosi is not solely responsible for Capital Security. It's a team effort.