Adding info…
This was called out by anons on Biden's swearing in
Every president receives a 21 gun salute after being sworn in. You can go back as far as there are videos of it for confirmation. Trump, Obama x2, Bush x2, Clinton x2
Not only was Biden curiously sworn in 10 minutes prior to the normal time but he DID NOT get any gun salute. None. Watch the video, none.
What Biden did get, otoh, was a lesser salute later in the day when he visited the cemetery. It was the same honor given to a visiting foreign dignitary.
I can find some links if interested but these facts were well established. This was all I needed on Inauguration Day to know we were still in clown world