I have seen some chazanim wait, during their Modim, at “l’olam va’ed” for the tzibbur to finish Modim D’Rabanan. That seems to make the most sense, so everyone can hear all of Modim. Should everyone be doing that?
When minyanim closed, I started davening vatikin (starting Shemoneh Esrei (=SE) at hanetz hachama (sunrise=netz)). If I do not know precisely when netz is, is it better to err on the side of starting SE before or after netz?
I thought that at Ma’ariv of Rosh Chodesh (or other times there is something new to say), the gabbai calls out “Ya’aleh V’Yavo” (=YVY) before Shemoneh Esrei. But in many shuls, someone just bangs. Which way is correct?