Well, that's certainly true. But what I had in mind was that all STATEMENTS issued by a Council are not necessarily to be considered infallible--only those clearly identified as being dogmatic. Same as for the Pope.
OK, got'cha. BTW, great mnemonic device to explain Infallibility. Sometimes it takes a convert's eye to give a fresh insight into what was once bred into the bones of Cradle-Catholics but has beome corrupted under the baleful influence of the soi disant traditionalists