.627 au is roughly 58,283,291.2 miles.
That’s quite a lot of real estate.
And the angle above the ecliptic that is on is following doesn’t descend towards us or intersect our orbit.
Ison is climbing away from the ecliptic relative to our orbit.
This is analogous of an aircraft flying over your car at cruising altitude.
The debris of Ison is composed of dust, small boulders, and rocks.
Nothing “miles and miles wide”.
Tail disconnect event occur to comets due to particle density of incoming solar coronal mass ejections.
The particle density jumps from .2 protons per cubic meter to 10 protons per cubic meter or so, the comet tail gets torn off.
Analogous of cigarette smoke being “torn” from a cigarette by a puff of air.
Thank you.
Of course, attempting to explain these spatial relationships to a two dimensional thinker is like teaching a pig to sing.
You know, wastes your time and only annoys the pig..
How much of a “Course Change” is this for the Isonoids ?