Bava Batra 33: Back When There Was No Paper Trail

A relative of Rav Idi bar Avin died and left a date tree as an inheritance -- which leads to a dispute with another relative over which is the closer relative and therefore stands to inherit. Plus, a discussion regarding the point that the heir takes possession - namely, from the time of death or from the time of actual possession? Also, another argument by logic, this time, "migo" -- when it conflicts with witness testimony (which carries more weight?)