Madam Chair, with respect to the order of questioning rounds, just looking to the practice in the House and at the most recently struck joint House and Senate committee, I would propose that the first questioning round go to the Conservatives as the official opposition and the second questioning round go to the Liberals, just as that's the practice, and then in the subsequent rounds where the Liberals would appear first, that's switched with the Conservatives, based on the practice of the most recently struck joint committee.
Evidence of meeting #1 for Medical Assistance in Dying in the 44th Parliament, 1st session. (The original version is on Parliament’s site, as are the minutes.) The winning word was subcommittee.
A video is available from Parliament.