72. There is a conflict of interest when there is a substantial risk that the lawyer’s own interests or his duties to another client, a former client, or another person would adversely interfere with his duties to the client and, in particular:
(1) when he acts for clients with conflicting interests; or
(2) when he acts for clients whose interests are such that he might tend to favour certain among them or that his judgment and loyalty may be unfavourably affected.
When the lawyer engages in his professional activities within a firm, conflict of interest situations must be assessed with regard to all the firm’s clients.