In New Zealand many cricketers play all forms, so are in one another's pockets for most of the year.
If one captain proves more successful than the other, what then? Another change at the top?
If Taylor hangs on, it will be with the country knowing, or at least suspecting, he's in a difficult dressing-room situation; McCullum, who has no notable captaincy credentials on his CV, can hardly win either.
Yesterday no one among the significant players in this farce said anything, other than the man who deserves the largest chunk of sympathy, Taylor.
"A lot of speculation out there," he tweeted last night.
"I have heard from the ceo [David White] once. I haven't made any decisions. At no time have I given nzc any ultimatums about [coach Mike] hesson, me or south africa."
So the feeding frenzy goes on.
New Zealand Cricket - the chief culprits in what has turned into a PR disaster - hunkered down as White flew back into Auckland from Dubai yesterday.
The T20 and test squads to tour South Africa were initially due to be named yesterday. That has now been put off until tomorrow, when the Herald understands all will be revealed.
This is the outcome when an organisation cannot settle on the captain it wants, having bailed out of offering any backing to the person it appointed 16 months ago.
What you're left with is a mounting pile of innuendo and rumour, or wildly varying reliability.
Among the stories being filed in the speculation bin are:
* That Hesson never really wanted Taylor as skipper, but felt he had to give the incumbent time;
* That Hesson, who has longtime links with, and is close to, McCullum asked Taylor to stand down either before the first test in Sri Lanka recently, or between the first and second tests, or upon New Zealand's return home, take your pick;
* That Taylor - shock, horror - had sworn at players in the New Zealand dressing room;
* That a large group of players don't want Taylor at the helm, and are backing McCullum;
* That McCullum had/had not been involved in usurping Taylor's position;
* That Taylor has dug his toes in and demanded he stays captain in all three forms or none;
* And that Taylor has threatened to pull out of the South African tour.
Sheet this pile of speculation directly to NZC's door.
White has repeatedly insisted there would be no announcement until after the debrief on the Sri Lankan tour.
Yet, having become aware of a firestorm building, NZC sat on their hands while two of the country's best players have been left in an appalling situation. What must they be making of their bosses?
In fairness to Hesson, he has the authority to make a key change if he believes it is in the best interests of the team, but the timing is dreadful; the handling of it barely credible.
What a madhouse.