The more trained you get, the less you're gonna see a post-exercise effect. So, if you're beginning training (near the first 4 weeks), post-exercise protein probably makes sense. If you're well-trained, you've basically been training the same way and you've been doing it for 6 months, I don't see any effect difference between having protein within 2 hours after exercise versus just having your 3 or 4 meals per day. You won't see any difference in either mass or strength.