Whether Germain, Howe, and Burgoyne had the same expectations about the degree to which Howe was supposed to support the invasion from Quebec is also unclear. What is clear is that Germain either left his generals with too much latitude, or without a clearly defined overall strategy. In March 1777 Germain had approved of Howe's Philadelphia expedition and did not include any express orders for Howe to go to Albany. Yet Germain also sent Howe a copy of his instructions to Carleton which plainly stated that the northern army was to make a junction with Howe's army at Albany. In a letter from Germain to Howe dated May 18, 1777, he made clear that the Philadelphia expedition should "be executed in time for you to co-operate with the army ordered to proceed from Canada and put itself under your command." This last letter, however, was not received by Howe until after he had departed New York for the Chesapeake. To attack Philadelphia Howe could either have moved overland through New Jersey or by sea via the Delaware Bay, both options would have kept him a position to aid Burgoyne if necessary. The final route he took, through the Chesapeake Bay, was immensely time-consuming and left him wholly unable to assist Burgoyne as Germain had envisioned. The decision was so difficult to understand that Howe's more hostile critics accused him of deliberate treachery.