[rules-users] Parallel rule execution in a RuleFlow

I've been experimenting with ruleflows and in particular parallel execution. According to the documentation an AND split "means that the control flow will continue in all outgoing connections simultaneously". I've been unable to demonstrate this. All my rules in one branch always execute before the rules on the other branch (I have an AND join joining these branches again). Is this the expected behaviour or am I doing something wrong? /Steven