Here ya go, Yaco, from Ride Media's Q&A with Richie, puts it straigher than my crappy memory could recall!!!
http://www.ridemedia.com.au/interviews/richie-porte-qa-leader-of-the-worldtour/
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From RIDE media's Q&A with Richie:
We saw you have a little chat with Alberto when the two of you were away. What’s being discussed then? It’s an obvious question but what language are you speaking and what have you got to say to one another?
“I use English.
“To be honest with you, I didn’t really want to attack ‘G’. I said that to G – that I wouldn’t attack him first… but then I also wanted to be on the podium and although G is one of my good mates, it’s a race. I didn’t really want to cooperate too much with Alberto but when we got away, it was to go for the podium for myself and try to get rid of [Ilnur] Zakarin (the stage winner on the Saturday, and third on GC going into the final stage just one second ahead of Porte).
“I guess we both had interests and I think it worked out quite well in the end, to move up into third position on the last day was quite a nice feeling.”
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