A Home widget can gather data relating to interactions by using the onAnyInteractionEvent. This will fire whenever there is an interaction event relating to any interaction, so won’t be specific to one interaction.
Similarily, onAnyInteractionEndedEvent, can be used on the Home layout to subscribe to interaction end events. Again, will not be specific to any one interaction.

OnCardFocusedEvent could also be used from the Home layout, which would return the full interaction object whenever a card is put into focus.

Yes, Disposition Codes are only applicable to Oceana. They are not used for Elite.