nige1, on 2014-July-21, 19:38, said:
Sorry. I didn't intend to misrepresent your views. That's why I quoted them verbatim, as above.
The law says that an unexpected failure to alert conveys UI. If the bidder didn't expect an alert, then when he doesn't hear one, he has no UI from that. Note that neither here nor earlier did I say anything about UI from another source.