DT m.out > ST m.in
ST m.through > TD3 m.in
TD3 m.through > Typhon m.in
set DT midi tracks to same channels that Typhon and TD3 receive at
set ST internal tracks to not receive anything, only leave clock on (and program changes if you want them both to change patterns in tandem)
there are other ways to arrange it but its what i would try first to see if it works for me.