The story seems to have come about as the result of their last tour together and, back then, there was a mixed reaction amongst fans. Just as you, a Mark fan, found Mr Bob unpalatable, so some Dylan fans found Mr Knopfler unpalatable. You are, of course, fully entitled to your view but it is essentially irrelevant. The key thing is whether the two principals found touring together to their liking (and I believe they did) and whether they feel it would be mutually beneficial for them to do so again (and I believe they do). That the other musicians and the road crew members also enjoyed working and touring together was helpful but not, I guess, crucial.
I have no inside knowledge or special insight but, having built up friendships and contacts over several decades of following Mr Bob's activities, there are indications that the two of them would like to tour together. However, nothing is clear-cut and nothing is definite, so, as we say here, you have to read the runes. Sometimes, it isn't what was said but the way things were expressed. Other times, what wasn't said seems crucial. Simultaneously, there are others trying to do the same thing. How does what they say fit in with what you've heard or surmised? How reliable have they proved in the past? And then there are the artists themselves. What have their work patterns been in the past? Out of all the various strands in this tangled web (and I haven't mentioned them all), you try to weave a coherent picture that is sensible and practical.
I have given my views on a possible re-run of the BD-MK tour in other posts and in other threads, so I won't repeat those views here, but I do not know how these fit with this supposedly on-off situation with the film score.
