Battling legal challenges at every turn, daily fantasy sports sites DraftKings and FanDuel are in talks about combining forces, according to multiple media outlets.

Citing people familiar with the situation, Bloomberg reported that merger talks have been going on for some time, but a deal could still fall apart.

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Representatives from the companies declined comment when reached by ESPN.

DraftKings and FanDuel have faced opposition in several states, with regulators saying that their products amount to illegal gambling. In March, the companies agreed to ban New York residents from entering their online games.

While they battle regulators, the companies also battle each other, dumping millions of dollars into advertising.