Combining `Effect.all` with `Effect.flatMap` and Adding Concurrency

How do I combine an

Effect.all

Effect.all

and an

Effect.flatMap

Effect.flatMap

, so flattening the result of an

Effect.all

Effect.all

, or if it is possible to add concurrency to the

Effect.flatMap

Effect.flatMap

that would also be a sufficient answer. Any pointers or help are appreciated :)!

Combining `Effect.all` with `Effect.flatMap` and Adding Concurrency - Effect Community