Navegante is a monthly ticket I was talking about, replacing the old L1, L12, L123, L123X kind of monthly subscriptions.
If you get simple tickets they will only cover Metro/Carris, then you need additional ones for CP, Fertagus, Transtejo, Softlusa.
Do the multimodal finally cover all of them, it has been a few years since I was a few days in Lisbon beyond the airport and travel north?
It used to be that some could be reused between transports, but only if the amount of travels was empty, and then recharged on the other system, being tied to it, until the travels would reach zero again.