If, for example, your manager sends a group email, once the first person responds the clock is ticking; if you do not jump on the email chain and chime in, you are not meeting the new norms of instant communication. It doesn’t matter if you are working arduously on a project for that very same boss; the expectation is that you immediately cease what you are doing—clearly interfering with your train of thought—and respond, lest you be judged negatively.
