“Judges are presumed to be impartial and the test for apprehension of bias establishes a high threshold. It requires that any apprehension of bias be a reasonable one, held by reasonable and right-minded persons. It asks “what would an informed person, viewing the matter realistically and practically – and having thought the matter through – conclude. Would he think that it is more likely than not that [the decision-maker], whether consciously or unconsciously, would not decide fairly”: R. v. S. (R.D.), 1997 CanLII 324 (SCC), [1997] 3 S.C.R. 484, 151 D.L.R. (4th) 193, at para. 31.”