Thank you. Very enlightening, yet not definitive. The velocity may overcome the Sun’s gravity but the Sun also has trajectory as does this object. Velocity is not the sole variable in the equation and the Sun is not a fixed object.
Also telling is the confusion in classification.
I would grill the astronomists further, just to keep them on edge.
And note, NASA PR people are so quick to get a piece of sensational news printed. Remarks such as “It could be interstellar and if it is, it’s the first we’ve ever recorded” by an astronomist becomes “It’s interstellar and is the first ever recorded” by a PR writer.
You aren't paying attention:
As of Nov. 20, 'Oumuamua is travelling about 38.3 km/s relative to the Sun.
"Relative to the Sun" means: "As though the Sun were motionless / were a fixed object.
Regards,