When an insurance lawyer has someone call about an insurance company denying a claim, an experienced insurance lawyer will always ask if the potential client knows about any other reasons the claim could be denied. The reason this question is asked is that an insurance company can deny a claim for one reason today and if that reason ends up being faulty, the insurance company can find another reason for denying a claim. As long as one reason for denying a claim is a proper reason, it does not matter that another reason for denial turns out to be incorrect.
This is partially discussed in a 2021, opinion from Houston First Court of Appeals. The opinion is styled, Amy Powell v. USAA Casualty Insurance Co.
This Court ruled in favor of USAA after USAA filed a motion for summary judgment.