Viper really doesn’t have any one frame links. Maybe st.H heavy TK feint to cr.H but you never want to do that.
But yeah it seems you found a combo. lol. I like the ones that use only 1 meter for 1 mil damage and build 2.5 more. Naturally though it depends on how you start a block string or hit confirm. You could go the easy route and do st.M st.H Medium TK into EX.TK which wastes a meter (still does great damage though). I’ve been trying st.m st.H into heavy.BK. On hit you go into heavy TK feint (on hit) and continue the combo from there for very very good damage. I’m starting to get use to st.M xx l.seismo for a block string and then do a BK mix-up off the SJC. That seems to be a good future for Viper.