SkyCity wants underground access from its Auckland casino to the City Rail Link, raising questions about whether it helped to garner Government backing for the project.
Strong support from Auckland's business community is believed to have been key to persuading the Government of the merits of the $2.86 billion project it opposed until this week, when it offered to put up half the cost from 2020.
One senior council source has suggested the casino and entertainment company would undoubtedly have contributed its renowned lobbying weight to the cause.
Asked yesterday whether it helped to get Auckland Mayor Len Brown's project over the line at the Beehive, SkyCity spokesman Gordon Jon Thompson said: "I have no idea about that - I'm sure they made their decision with their own mind because they know what's good for Auckland."