τῶν ἁλῶν συγκατεδηδοκέναι μέδιμνον → have eaten a bushel of salt together
in a line: P. and V. ἑξῆς, ἐφεξῆς.
keep abreast of, v.: use P. and V. ἕπεσθαι (dat.), συνέπεσθαι (dat.).