The topic already explains how to chain auto actions below.
www.joomlapolis.com/forum/153-professional-member-support/238118-multiple-auto-actions-in-sequence?start=24#300335
Your issue however can likely be solved by using the Reload User parameter under the Parameters tab so it'll reload the user object. Example as to why this is needed as follows.
Action 1 <- changes field cb_test to 123
Action 2 <- checkes for cb_test being equal to 123
In the above if both are acting on the same trigger Action 2 will fail. The reason is because they're both acting on the same non-referenced user object. So Action 2 won't see the changes made by Action 1. The workarounds to this is to either specify the user object variable as a reference variable or to enabled Reload User in Action 2 (not necessary for Action 1) so that it reloads the user object.