Brewing leaves for 3 X 3 hours isn't necessary, that is only for the vine.
So you're good with your 3 X 45 min. and less I'd think.
As for combining the two, the closer I've went to is rue harmalas with chaliponga and chacruna, and that was definitely a very positive experience.
Enjoy !
Smell like tea n,n spirit !
Toke the toke, and walk the walk !