Order, Supreme Court, New York County (Edward H. Lehner, J.), entered September 12, 2003, which, in a declaratory judgment action between insurers involving their respective obligations to defend and indemnify their mutual insured, a general contractor, denied the insurers’ respective motions for summary judgment, unanimously affirmed, without costs.
Plaintiff is the general contractor’s liability insurer; defendant is the subcontractor’s liability insurer; defendant’s policy covers the general contractor as an additional insured. The subcontractor’s employee brought the underlying main action against the general contractor; the general contractor brought the underlying third-party action against the subcontractor. Defendant’s New York office agreed to defend the subcontractor in a reservation of rights letter dated April 2, 2002, a copy of which was apparently also sent to the law firm that represents the general contractor in the underlying action and plaintiff in this action. This action was commenced on October 30, 2002 af
