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Horner (left), Ricciardo and Marko.
There are three key men you need to get on with at Red Bull. Owner Dietrich Mateschitz, team principal Christian Horner and influential team adviser Helmut Marko.
They all love Sebastian Vettel, so forging a bond of sorts with each is very important.
Webber had a curious relationship with at least two of those men. He certainly didn't get on well with Marko, and from the outside it appeared the relationship with Horner was a little bit strained as well.
But he remained with the team for four years after the first obvious cracks emerged, so things can't have been that bad. And he did have a closer relationship with Mateschitz.
The team owner knew long before anyone else that Webber would be retiring and didn't even share the news with Horner, who was taken by surprise when the announcement was made.
And he told Autosport last year that Webber would retain Red Bull backing in his new sports car career with Porsche.
Ricciardo, as a graduate of the Red Bull Junior Team, has worked with Marko for years. Before the start of the season, the Australian he told Fairfax Media (h/t grandprix.com) the two have a good relationship.
It's harder to tell how close he is to Horner and Mateschitz, but they must like him—he wouldn't be in the seat if they didn't.
For now at least, it seems Ricciardo gets on with everyone.