In particular, Chimera chains solve the "deciding which consensus to execute" problem. We explicitly partition state to specify what multi-chain transactions are possible at any time. All partitions retain the full guarantees of their base chain. 7/9
blog.anoma.net/heterogeneou...

Like shared sequencers, Chimera Chains commit atomic bundles of transactions to each base chain. Unlike shared sequencers, chimera chains are still possible when the base chains' trust models are different. 5/9

This brings us to a classic example in cross-domain atomic transactions: the user wants a train ticket if and only if they can also get a hotel room. They want to run these transactions atomically. If they get one, and then the other becomes unavailable, the user will be sad. 3/9