An Anechoic chamber does not have any magical properties; it simply has walls coated with non reflective sound absorbing material, typically of a roughly egg-box surface structure.. .The direct "line of sight" sound would still travel along the table to the other person as normal, and be heard as normal. Simply all echoes off the walls would be absent.. .Communicating in a chamber with Activenoise reduction operating however is a whole different matter.