gordontd, on 2017-December-10, 06:10, said:
It's no surprise that top directors disagree. when. for us ordinary players, Bridge rules, especially local regulations, are too sophisticated to understand. For example, a naive player might reason as follows:
Any failure by you to comply with stop-card regulations breaks the rules. You create potential UI. Hence your opponents would be well-advised to call the director, to deal with your infraction,
Even If opponents condone your infraction, your partner must still take care not to choose a logical option, suggested over another, by UI.
When you comply with the rules, however, partner seems to be under no UI constraint.