I must’ve misread you. I saw a video on youtube that reported two tugs were escorting the Dali until it had established itself in the channel leaving the harbor. Then they were dismissed or allowed to end their duty. Fairly sure this is the one. 8 minutes.
https://m.youtube.com/watch?v=N39w6aQFKSQ&pp=ygUNTVYgRGFsaSBUcmFjaw%3D%3D
...Before the Dali lost power and hit the bridge.
Thank you for posting this.