Message Bus across Ethereum/Avalanche testnets: what to expect?

[feuGeneA]

(I asked this question on Discord but I was asked to submit a ticket instead. I hope this is the right place to submit it.)

i'm trying to send a message from Goerli to the Avalanche testnet (Fuji). i deployed a MessageApp contract to both chains/networks, and i sent the transaction to Goerli, but i'm not sure what to expect next. where can i see the message in transit? should I be able to search for the goerli tx hash at celerscan.com? it's been a few days and such a search is still turning up nothing.

my goerli transaction: https://goerli.etherscan.io/tx/0x81090836fb3940fa698e5ffe98bf94f9d071f2375c9c947b8a52705c03f39c69
(there you can also see, at the destination address, the source of the verified contract)