Tried this again today as one of my “cold brew things I wouldn’t regularly cold brew” experiments. The result was sweet. Really, really sweet. Just opening the container gave me a full whiff of sugary aroma. The flavor was also quite sweet, with a bit of lingering cranberry, but not as tea-like or rich as it had been when brewed hot. However, the somewhat astringent finish of the hot brew was gone in this preparation, and it was silky smooth.
Overall, I’m not sure I’d try this one cold again. This does seem to be a method for finding out if a blend has more flavoring than I would like.