Yup, pretty much
Also worth nothing, since you are using melee, that melee doesn't prompt reactions, so
if you can get up to one, you are free to swing at it until you kill it (or run out of TUs..) But beware, stepping in front of a melee unit can trigger it to react to your movement and, in the case of a chryssalid, turn you into a zombie. So better try it from the back (which also reduces their melee dodge, probably, meaning you are more likely to hit).
It's not a very good tactic, but with good melee gals it can work. Especially if you have flying armor and can "lift off" before running out of TUs, thus making yourself immune to the chryssalid's retribution as it can't hit a flying enemy.