When my navy WWII combat veteran uncle was being buried, when taps was played my dad, overcome with grief dropped to his knees. I don’t think the reasoning is the same for both cases but everyone emphatically did not raise an objection at the funeral.
That taps part is tough.
I think being on both knees is totally different than one.
On a recent Sunday at Church a bugler played Taps. I rose as did a man in a pew next to me. Then slowly around the room men rose and placed hand over heart. It was a powerful event and a reminder of just how many have served the flag.