Agile goes beyond the development teams otherwise it doesn't change anything.

If your development team is the most agile/lean team in the world, has great interaction, consistent velocity, delivers regular and on time, has excellent sprint reviews, anything you want.

But developments start after months of preparation, budgets discussions, designs, approvals,... you are not agile.

If you only have 1 big release with the final product because you need months of integration testing, complex deployment procedures... you are not agile.

In this case, does it help that the team is using some agile methodology? Agile goes beyond the development teams otherwise it doesn't change anything. Don't expect your development cycle to give you better and faster results if you limit it to the development team.