In fact, the rule is to determine whether or not those two bills seek to achieve the same things in the same way. I know that Bill C-37 is a bit broader. It includes more substance, but it tries to achieve the same thing in the same way. It's just the scope of it. The scope of C-37 could also be dealt with in committee or by the House afterwards. There could be amendments to the bill to change its scope if members would like to change it.
On February 2nd, 2017. See this statement in context.