that's because your teksavvy service is over Shaw or Telus lines. This outage was out of Teksavvy's hands: if you were in their Rogers-based territory on DOCSIS, you were down with the ship.
AFAIK, Rogers doesn't lease Bell lines ever, not for home internet anything anyway.
Rogers only has 13% control of Cogeco itself: https://crtc.gc.ca/ownership/eng/cht043.pdf