Q. if one comes slightly late to shul and the tzibbur has already started shmone esrey, may one start while the tzibbur is in the middle of davening if he will miss answering kedusha? At what point is the cutoff? Thank you.

A. Assuming that the question is regarding Tefilas Mincha, Horav Shlomo Miller’s Shlit’a opinion is that, if you are able to begin and end your amida before kedusha is recited, you should do so. If that is not an option, it is better to wait and recite the amida silently together with the shaliach tzibur, word by word, when he repeats the amida. This would qualify as tefila betzibur.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a