No, because both kinda suck in the face of Kamui
Totsuka can seal away Kamui and Yata can reflect it back to the user, causing them to kamui themselves
"TS can seal everything"No it can't. "All things lose their meaning before the mirror"
Totsuka cannot pierce a dimensional rift. And since Kamui isn't an actual attack but actually a dimensional rift, it cannot block, since all ATTACKS are useless. lol Kamui solo both weapon -neg comfortable diff
Totsuka can seal away Kamui and Yata can reflect it back to the user, causing them to kamui themselves

No it can't. "All things lose their meaning before the mirror"
:itachi: -the answer u will recieve will be full of hypocrisyBut Totsuka can "cut down any enemy in it's path." So if the enemy is holding Yata, then Totsuka can seal it.
Actually kamui can't solo anything. Totsuka and Yata are etheral weapons they exist in a completely different realm of reality. Kamui is bounded by dimensions why the etheral weapons aren't. Even if they were to be kamui'd (which they can't). They only need to be resummoned.
The reason they can't is because Yata deflects all forms of attacks. Anything that can put someone in harm is an attack. If Itachi is defending himself against Kamui and has the Yata Mirror up. the attack or teleportation will simply cancel out because of the way the shield works.
Totsuka cannot pierce a dimensional rift. And since Kamui isn't an actual attack but actually a dimensional rift, it cannot block, since all ATTACKS are useless. lol Kamui solo both weapon -neg comfortable diff
If they existed in a different reality then they wouldn't be able to block or pierce anyone in the normal reality They would be non-existant.. Kind of like how the kage has to be summoned to the normal reality to actually use the summoning jutsu, they couldn't do in in the dead reality, same with obito, he had to leave rin from the dead reality to go into the normal reality to give kakashi his MS. And Kamui can go to any demenion as manga has proven, lol.
Anything that can put someone in harm is an attack? so falling off a cliff is an attack? a Demensional rift isn't an attack, it is what it is, a dimensional rift. The laws of yata don't precieve dimensional rifts as an form of attack because it isn't anything it can relate to unlike the 5 basic elements. Yata is actually a basic shield, anything beyond the elements solo Yata. Like Kamui.thanks.
I'd hope to think that they cancel each other out.
it'd be a shame if itachi slipped up and sealed his yata mirror