As a 3rd year PhD student in a Canadian university, I've been given the opportunity to work directly with my supervisor's long-term collaborator, who is a young faculty member in an Australian university. I shall be visiting him for a month to initiate a (STEM-theory) project and am looking for advice on how to make the collaboration fruitful.
More specifically, it took time for me to understand my own supervisor's priorities, strengths-weaknesses and way of working. With that understanding, I have been able to work effectively with him. How can I quickly learn the best way of working with my new collaborator?