Nested macros?

gistfile1.scm

(define (add6 n)
  (+ 6 n))
(define (return5)
  5)

;I want to create a macro (or series of macros) that will expand this:
(>>
  (return5)
  (add6)
  (display))
;into this:
(display (add6 (return5)))

;I have the following macro:
(define-syntax >>a
  (syntax-rules ()
    ((_ ((this ...) ()))                       (this ...))
    ((_ ((this ...) . (that ...)) )            (this ... (>>a (that ...))))))
;That makes this form work:
 (>>a
  ((display)
   (add6)
   (return5)
   ()))

;Now all I have to do is write a macro to reverse the order of the functions
(define-syntax >>b
  (syntax-rules ()
    ((_ (this ...))   (reverse (this ...))) ))

;Now, to put it all together, I use
(>>a
  (>>b
    (()
    (return5)
    (add6)
    (add6)
    (display))))
; But it doesn't work, no matter what I try