why doesn't (:analysis data) return a ListCursor?

components.cljs

(defn combo-view [data owner]
  (print (type data))  ; prints cljs.core/PersistentHashMap
  (reify
    om/IRender
    (render [this]
      (apply d/div nil
        (d/strong nil (str/join "-" (:value data)))
        (let [streams (if (:extended data) 
                        (nth (:streams data) 0)
                        (take 3 (nth (:streams data) 0)))
              stream-divs (map #(d/div nil %) (rstreams->words streams))]
          (if-not (:extended data) 
            (concat stream-divs 
              [(d/a #js {:onClick #(om/update! data [:extended] true) :href "#"} 
                 (d/small nil "more..."))])
            stream-divs))))))

(defn combos-view [data owner]
  (print (type data))  ; prints om.core/MapCursor
  (print (type (get-in data [:analysis])))  ; prints cljs.core/List
  (print (type (:analysis data)))  ; prints cljs.core/List
  (reify
    om/IRender
    (render [this]
      (apply d/div #js {:className "col-xs-6"} 
        (om/build-all combo-view (get-in data [:analysis]))))))