Handling Spans in Concurrent Effects with Effect.all vs. Fiber.joinAll

yield* Effect.all([
   reportSomethingSlow([]), // has a span
   reportSomethingElse([])
], {concurrency: 2}) 

const first = yield* reportSomethingSlow([]).pipe(Effect.fork)
const second = yield* reportSomethingElse([]).pipe(Effect.fork)

yield* Fiber.joinAll([first, second])