Indus valley script is about 1500 years earlier than Linear A and I hope we can also decipher Indus script using AI or not [1]. It's well overdue although from statistical profiling it's has been proven to be a valid linguistic script believed to be being used for writing system the ancient Harappan language, the likely precursor of modern Dravidian languages for examples Telegus and Tamil.
The main reason it's very difficult to decipher is that there's no equivalent Rosetta Stone for Indus script. My hypothesis is that the AI LLM model can be trained or tuned as the logical or virtual version of the venerable Rosetta stone hence can be used to decipher ancient writing system.
[1] Indus script: