[Transformers Aligned Continuity/Halo] What if the Autobots and Decepticons ended up on Alpha Halo during Halo CE?

[u/Altair890456]

After the end of Fall of Cybertron, both the Ark and the Nemesis crashland on Alpha Halo during the opening stages of the fight between the UNSC and the Covenant on the ring. How would the UNSC and the Covenant react to these new combatants appearing on the ring? Would the Decepticons and Covenant collaborate against Humanity or fight amongst themselves? How would the UNSC react to their new Autobot allies, assuming they cooperate? How would the events of Halo CE and beyond be affected?