Rav Gidal bar Menyumi [Pesachim (K67a) in the name of Rabbi Ami, Shekalim 4:4] stood before Rav Huna and Rabbi Chiya bar Rav and Rav Chalkiya bar Tovi [Baba Batra (39b) and Jerusalem Talmud there]. He was standing before Rav Nachman [Berachot (49a)].
Seder_HaDorot,_Tanaim_and_Amoraim.855:1