I have some reservations about trying to line up more than one teleconference participant at a single conference. Without actually having examined the relevant time of day in Sweden versus Victoria--I'm going to guess it's about 12 hours difference--that's one consideration. The interaction might be very confusing.
I urge us to consider, if we can't get Professor Sullivan at a later date, trying to get her and one of the teleconference participants on one day, and the other teleconference participant on another day--or something like that. I have visions of a very confused meeting.