Bob is effectively your manager, and thus your direct superior. Since you get along well with Bob, take this up with him. If he wants to resolve this, he can easily do so.

If you do what you suggest, you're attacking and undermining Bob:

I would like to say the following to Jules: "How can you not notice that I do all the work, that Bob no longer knows what is needed to do in this area, and I should be the one making decisions here".

But if Bob says this, things are completely different:

"How can you not notice that Anonworriedworker does all the work, that I no longer know what is needed to do in this area, and Anonworriedworker should be the one making decisions here".

Of course Bob, being experienced, will chose better words than that, but to the same effect. If he doesn't want to do this, then at least you know that he indeed does knowingly take your credit.

Bob is effectively your manager, and thus your direct superior. Since you get along well with Bob, take this up with him. If he wants to resolve this, he can easily do so.

If you do what you suggest, you're attacking and undermining Bob:

I would like to say the following to Jules: "How can you not notice that I do all the work, that Bob no longer knows what is needed to do in this area, and I should be the one making decisions here".

But if Bob says this, things are completely different:

"How can you not notice that Anonworriedworker does all the work, that I no longer know what is needed to do in this area, and Anonworriedworker should be the one making decisions here".

Of course Bob, being experienced, will chose better words than that, but to the same effect. If he doesn't want to do this, then at least you know that he indeed does knowingly and willingly take your credit.