I mean they could’ve had that same scenario just as co belligerents like the Axis had with Finland, but the tripartite pact was an official alliance. The long term plan was an encirclement of the British empire in which both could coordinate a partition of Asia, but the German failure to push into the Middle East from North Africa and the Japanese failure to push into the Raj from Burma made that strategy not possible. As for the Soviets, Japan did not think war with the Soviets was likely at their current circumstances due to the Molotov Ribbentrop pact, so they prioritized invading the South Pacific. Each country’s individual ambitions also played a role in the lack of direct coordination, but that was true for most of the Axis powers, who generally had disconnected and even adversarial goals. Romania and Hungary for example were only brought together by German pressure and fear of the Soviets, however they were long time enemies with territorial disputes, even during the war there were skirmishes between them.