Tuner and Garrett are friends. What other coaches would he say this about? Cam? Tony S?
Turner and Garrett are indeed friends. That's totally meaningless. The only reason Turner wasn't hired is because he told Jones that Garrett isn't ready to be an offensive coordinator, and I'd say Turner knows a thing or two about running an offense.
Upon hearing this, Coach Jones got offended that Turner might not meekly say "yes sir" to his judgments from on high, and then went and hired the guy who WOULD say "yes sir," one Wade Phillips.