Would Nelson take the same risks in Cornwallis's post?

Would Nelson have been as aggressive in Cornwallis's place?

Probably not: Cornwallis carried broader responsibilities and could afford caution because he could send Nelson forward.

Nelson would probably have been more cautious with Cornwallis's responsibilities, while Cornwallis could afford to hold back because Nelson was available to move forward. Calder's departure illustrates another limit on a fleet commander's freedom. Nelson and Collingwood wanted him to remain, fight the expected battle, and let his service answer his critics. Calder instead returned for his court martial in the 98-gun Prince of Wales, taking away a powerful ship that would have been useful at Trafalgar. Although he was later accused of deserting Nelson, he had received orders to return home, and Nelson was encouraging him to set those orders aside.