future+while+present progressive

[ostap77]

"I'll be watching TV while kids are playing in the backyard."(correct)?

OR

"When they are shopping, I'll be watching a soccer match."(correct)?

OR

"When they will be shopping, I'll be watching a soccer match."(incorrect)?

[bhaisahab]

"I'll be watching TV while kids are playing in the backyard."(correct)? Yes.

OR

"When they are shopping, I'll be watching a soccer match."(correct)? Yes.

OR

"When they will be shopping, I'll be watching a soccer match."(incorrect)? Yes, incorrect.

Bhai.

[ostap77]

Bhai.

"She's going to cook dinner while kids will be playing outside." OK?

[bhaisahab]

"She's going to cook dinner while kids will be playing outside." OK?

I wouldn't say it's wrong exactly but it's awkward, "...while the kids are playing outside" would be better.