touching the hand to the chest after shaking

and also bowing slightly whilst shaking hands…

some brothers do this, is it from the Sunnah?

is giving two hands from the Sunnah?

and the Arab cheek kiss? is that islamic?

Ive heard that touching the chest after shaking the hand of another muslim isnt from the sunnah. But I also read that there wasn't anything wrong with it.

I can't find any evidences so I may be wrong.

Personally, I like doing it and when someone does it to me - it makes you feel that they value your handshake.