The longer I work in Greek, the more curious I am about conjunctions, and the more I am concerned about how we teach glosses.
Take τότε for example. BDAG give two meanings using the gloss “then.” It can mean “at that time,” which conveys no idea of sequence. It can also mean “then” in the sense of “that which follows in time.” The problem of course is that if you translate with the simple gloss “then,” we hear it as sequential.
Coupled with this is how English hears a series of events. Even without conjunctions, we default to hearing them as sequential. This happened, then that happened.