Cmdr David Fraver and others have made visual confirmations.
In fact, the only observation of the craft in the water under the tic-tac was visual.
Did You hear about the TT that submerged and was on the USS Princetons Sonar and the SSN Louisvilles Sonar as well ?
The USS Princeton Sonar Operator ask the SSN Louisville Sonar Operator if they had it also because the TT was traveling at 75 knots- submerged !?!?!?
The SSN Louisville Sonar Operator confirmed that and then told the USS Princeton to cease the conversation. Later on The USS Princeton Sonar Operator contacted the SSN Louisville Operator to talk about the whole thing and was told DO NOT CONTACT ME ANYMORE!