"Apparently I said to him I don't know it, talk me through it. At that point he knew I wasn't quite right and was no good to him or the team and was also putting myself at risk by carrying on playing. He let the physio know and they pulled me off then and there.
"Who knows, if I'd played on however long and taken another bang … two knocks in one game is seriously not good. I'm thankful Brodie did what he did."
Cane says he believes real courage on the rugby field is admitting that you or your teammate has been affected by concussion or a head knock.
"As rugby players we all like to try to tough things out," he told Stuff. "A lot of guys would be first to throw their body on the line for their team, but it takes real courage to put your hand up and say you're not quite right this week, or suffering headaches or nausea from a blow you've taken.
"It's courageous for your own wellbeing but you're also no good to your teammates if you're not at 100 per cent.
"Equally, everyone wants to be liked by their mates, but a real mate will look out for another one, and his wellbeing certainly comes before any game of rugby."
Cane's playing comeback from a shocking neck injury could begin against the Blues in Auckland this Saturday.
Chiefs coach Colin Cooper said Cane was "going really well" and his comeback "could be this week or next".
Cane suffered a neck break during a test in South Africa last October, and underwent surgery leaving him in a neck brace for six weeks.
