What's the condition on Kage's 6K+G combos?

I found out that + with Kage, can lead to some damaging(not that much) combos, such as for MW, +,P,+, for about 72 damage.(closed stance)

Although I didnt find any FAQ or guide mentioning anything about this combo.
Anyone know anymore variation and other combos for different weight groups?

 

oh also, I saw Kyasao doing a backstagger combo after +, then elbow. How the hell do you do that?
what's the condition for it?

 

Basically the backstagger after ++ can work on heavy characters because they are able to crouch and avoid being hit by the of ++. If they crouch when it hits, they won't be floated as high and the second hit will whiff, allowing the to TR and get a huge advantage as Kage has a lot of recovery after it. So you can anticipate them crouching and get a free backstagger with +. /versus/images/graemlins/cool.gif

 

Just to let you know, + ~ is already techroll-able if you can use exact timing, the punch won't even connect if they techroll the slam + hit. So, the second + and won't connect either. and since + is a guarenteed hit/throw move, you're going to be in for some damage if you throw out the and second + when the opponent techrolls. But, if you're sure about your reaction speed, then I guess you can try it? Good luck