(chunk b)
(chunk-rest
(chunk-cons (chunk (chunk-buffer 32))
(seq (range 42))))
;; => (32 33 34 35 36 37 38 39 40 41)
;; Or if you'd prefer to read it threaded:
(-> (chunk-buffer 32)
(chunk)
(chunk-cons (seq (range 42)))
(chunk-rest))
;; => (32 33 34 35 36 37 38 39 40 41)