I agree with you,,
They start using there noses whilst out on puppy walks to a degree,,,some will more than others of course,,,I usually have them out ferreting early,,,so again they start using there nose,,,,after that ,,,8 months onwards I might try any pic out a rabbit on the lamp,,,
But recal should be good by then,,,
Now I don't pretend to be the best dog trainer,,,,but I've never had a pup hunt up on the lamp,,,if it misses on the lamp as a pup,,, shout it back if nessasery,,,but mine will come back to a high pitched hiss,,whistle sound