“of one or more occurrences that may give rise to a claim under the insurance policies identified in the attachment…that [GSIIL] issued covering Howden Buffalo”, that “in light of the attachment point of the policies Howden Buffalo is not presently seeking coverage from [GSIIL] for the Underlying Asbestos Suits”, but “due to uncertainty surrounding asbestos litigation and the difficulty of estimating potential exposure, we are providing precautionary notice to our higher-level excess carriers, and will seek coverage as and when the costs incurred in connection with the Underlying Asbestos Suits reach the attachment point of the Policies.”