I accept the copious evidence that aircraft hit the Twin Towers, in such places as to cause the extensive damage and fire, all as indicated by countless videos, photographs witness testimony and debris. I expect they were the passenger flights as claimed because this would be almost impossible to distort, but I haven’t looked into it.
The calculations for the structural failures which initiated the collapses are beyond my expertise, and in any case the extent and disposition of internal damage can only be estimated.