Although AB de Villiers says he is happy to step into the breach created by Hashim Amla's shock resignation as South Africa's team captain on Wednesday, is he? And Amla, meanwhile, has contradicted himself on the process of making his decision.Proteas' supporters would be forgiven for thinking all is not as it seems with the national team, especially with this occurring in the middle of their toughest home series against England.When Amla was appointed in 2014, De Villiers made plain his disappointment that he hadn't landed the job."Everyone has dreams and ambitions, and hopes they will become reality, but I accept the situation and will not let it come between me and Hashim," De Villiers said then.Now he will lead South Africa in the last two matches of the England series. The next match is at the Wanderers on Thursday. The visitors are leading 1-0."The captaincy has obviously come at short notice and is the realisation of a lifelong dream," De Villiers was quoted as saying.This, mind, from someone who did not issue a denial when he was asked during the first Test against England at Kingsmead whether he was considering retirement.Instead, De Villiers spoke about maybe not playing "all kinds of cricket" and said, "I do get a bit tired towards the end of the season."That the suits took him seriously became apparent when Quinton de Kock was named wicketkeeper for Newlands.So, does De Villiers want the responsibility of captaining South Africa's Test team? Or is giving him the captaincy an incentive to stop him from hanging up his whites?De Villiers has not captained a Test team in any of his 130 first-class matches.The transition from Amla to De Villiers promises to be smooth - at least on the surface."As long as someone is going in the right direction, we all will go with him," Amla, speaking for his teammates, said on Wednesday.But some of what Amla said does not add up. First he said: "The decision [to resign] was not made over the last couple of days; the decision was made at least two weeks ago, certainly after giving it a lot of thought."Then, having been asked why he had not quit before the England series, he said: "I said that I didn't make my mind up two weeks ago. I said I'd been thinking about it two weeks ago; that's what I said."..