When individual fields are combined into one like this, the resulting whole is usually greater than the sum of the individual parts because there’s some synergy that comes from the combining. (Think how a stew becomes a richer version than all its components.)
That being said, if you wanted to approximate this field by playing the individual component fields as you were asking, yes, you’d go a long way towards having the effects of this field. It’s a good hack that could benefit a lot of people. (Just pay attention to the listening guidelines for PTSD Help, because it has the SGB component in it.)