τούτοις οὐκ ἔστι κοινὴ βουλή → they have no common ground of argument, they have no common agenda
P. and V. ἀξιοῦν, δικαιοῦν (Sophocles Ajax 1072), V. τολμᾶν, Ar. and V. τλῆναι; (2nd aor. τλᾶν).