Without limitation of any right or defense of an insurer, the following acts by or on behalf of an insurer are not considered to be a waiver of a provision of a policy or of a defense of the insurer under the policy: acknowledging the receipt of notice of loss or claim under the policy; furnishing a form for: reporting a loss or claim; giving information relating to a loss or claim; or making proof of a loss; receiving or acknowledging receipt of a form or proof listed in item (2) of this section, completed or uncompleted; investigating a loss or claim under a policy; or engaging in negotiations toward settlement of a loss or claim.