So if the Buddha was severely physically hurt, He didn't feel pain?
I dont know I wasnt in his head
it is like tasting lots of salt and not finding it salty.
Pain is just a different sensation to pleasure, a label used to describe a different sensation. I know my self that it doesnt have to be dukkha
I am not aware that an Arahant is invulnerable to pain and physical discomfort.
So because your not aware, it must be false?
Pain is included into Dukkha.
Dukkha is summed up as clinging to the aggregates. Non-clinging to the aggregates = no dukkha
It follows that if there is no clinging, then pain is not dukkha. Pain is not pain if you will
You seem to ignore the last part of the first noble truth
Also the suttas where the Buddha states that when one is not adverse to a physical sensation, then there is no dukkha there
Thus Arhats/Buddha do feel Dukkha to some degree.
How could you possibly know that