The Sunwolves improbably led for large periods of a balanced first half, but tries from Kurtley Beale and Folau turned the match in a frantic spell that then saw Semisi Masirewa sent off for a challenge on Bernard Foley on the stroke of the interval.
Leading 24-18 at the break, the Waratahs accelerated out of sight after the restart, crossing three more times before Akihito Yamada got his second try – the Sunwolves’ final score – 25 minutes from time.
And it went from bad to worse for the visitors when Fumiaki Tanaka was sent to the sin bin with 10 minutes remaining, allowing the Waratahs to add a further three tries to an already lopsided scoreline, breaking the side’s record for points in a Super Rugby match.
The Brumbies, chasing a fourth straight win to keep their late push alive, recovered well after trailing by 19 points with less than 20 minutes remaining, but Thomas Banks’ try and Henry Speight’s second of the match could only rescue a bonus point.
Nathan Harris, the influential Damian McKenzie and Jonathan Faauli all crossed for the Chiefs.
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