If I got the point:
1. You go to OfflineTG with 3 euds already hatched in your hatcher but not transferred to eud bag.
2. Leave space in the bag for 3 euds
3. Have 3 other eud eggs (not hatched) on you.
4. When you think you've had enough training, log in
5. Don't click Yes in training results window, but open your eud bag.
6. Click on each of hatched euds you had in your hatcher to transfer them to eud bag.
7. Put 3 unhatched eggs into hatcher.
8. Now click Yes in training summary window, so you get out of OfflineTG room and gain that training experience.
If it works, 3 euds you took out of hatcher should be leveled as all the others you had in your bag during training already. 3 other you put in in OfflineTG should be hatched.
If it works, you can hatch X euds in minutes (X = the number of hatchers you've activated):
1. Put X eggs into hatcher, wait till they hatch, make sure you have empty space in eud bag for them.
2. Go OfflineTG
3. Log in, while in OfflineTG transfer hatched euds to bag, put X unhatched euds in
4. Leave OfflineTG room.
Don't kno if you have to wait 1 hour, anyone can dig it?