The genius of this quick sequence from lightweight wizard Caio Terra is that it turns a potentially risky transition, going for the top half guard americana into and almost pick your poison chain of counter and re counter by involving the gi. You never take your hips off your partner, and you maintain control throughout the move with strong lapel use. At any point you can bail on this top half guard americana, and still have many passing or other submission options.
Hope this helps, see you on the mats!