For example.
P-1S-2S-4S (a passed hand raise to 2S slowly)
A slow 2S in this spot is very likely to be borderline –Drury – normal 2S raise –or 3S (mixed raise).
Opener bid an agressive 4S and dummy come down with 5 pts. All the cards are well placed and its a very lucky make. Even declarer (beginner) admit that he bid 4S because he tought that responder was close to a Drury hand.
1-Bit is agreed
2-The slow 2S suggest extra strenght or extra lenght.
3-Opener bid 4S with the help of the UI
4- There is damage
5- Over a 2S in tempo opener would make game try or pass (both LA) and they wouldnt reach game.
In fact all players agree with the above.
My longshot view is that since the hand didnt match the information transmitted there was no information in the first place (or the information had no value). No information = no UI = no infraction.
Another longshot view is that there is no damage since 4S was a poor contract and it made because of lucky layout. But this doesnt match our current definition of damage.(damage exists when because of an infraction, an innocent side obtains a table result less favorable than would have been the expectation had the infraction not occurred.)