I don't know what the apple wallet programmer's interface allows (I could be not lazy and look it up, but maybe later!) but i know apple wallet "knows" when multiple items (apple-based-purchases from apple) are combined into one charge, so if it were possible to get those and create split lines for each purchase downloaded from Apple Wallet (at least the Apple purchases), I think that would be awesome and a nice feature!
Example:
Total Charge: $19.98
Split1: (Apple Arcade) $6.99
Split2: (Apple News) $12.99