https://www.scaledagileframework.com/agile-teams/
Explore, Integrate, Deploy, and Release Independently Planning,
demoing, and learning together creates the alignment that enables
teams to independently and reliably deliver value. Agile teams drive
value through the entire continuous delivery pipeline. Collaborating
with product management around continuous exploration, they
continuously integrate, and they continuously deploy their work to
staging and (ideally) production environments. While Agile teams
strive to independently deploy and release their parts of solutions,
some technical, regulatory, and other hurdles may hinder them. In
those situations, teams coordinate and align their deployment and
release to production. Agile teams help validate feature hypotheses by
deploying to production early and frequently. They design their
systems in ways that permit decoupling the solution from the release,
enabling the ability to release on demand.
Just add to above answer , even in SAFe Agile each team should ideally work independently so the definition of done and ready should be specific to each team and context
https://techbeacon.com/app-dev-testing/4-biggest-challenges-moving-scaled-agile-framework-safe
Explains more about the concept ,