Following this auction, as North is considering his lead East gives what he believes is a late alert that West's NT overcall has an 11-14 range (overwhelming standard is 15-17 or 15-18 in our area). We do a quick check-in w/ the director, who claims that the NT overcall is not alertable or annoucable regardless of range, and that North/South need to ask or look at the convention card to verify the range.
Is this true...do we have to ask/check every time to cover the 0.5% of the time that opps are using a non-standard range here?