I agree, I could have been clearer by repeating the exclusion for weather delays on one or more line items. I'm sure there are even borderline cases where a denial by the airline might be questionable and your only course of action would be to repeatedly and/or strongly state your case, escalate the matter up the chain-of-command, call/file your case with the government (e.g., DOT ACPD), file a request for arbitration (i.e., if your ticket requires), file a small claims suit, etc.