There's Killer after defeating Hawkins. Law was heading for Linlin.
Yamato passed through the second Floor on her way to Kaido and never encountered Jack. If Oda wanted her to fight Jack he could have had Jack intercept her.
Yamato meeting Jack on the way back is also something I doubt will happen for three reasons.
#1 There is no narrative setup to it.
There's nothing in the manga itself or extra canon material that suggests that Jack is Yamato's opponent.
All of Jack's narrative setup for conflict has been with the Dukes.
All of Yamato's narrative setup for conflict has been with her father.
I don't think Oda wants to write it.
I don't think Jack is who Oda wants to write Yamato fighting. There's quite a lot suggesting that he wants to write Yamato vs Kaido:
I don't think the fight can develop organically
So leaving aside narrative and authorial fiat, I don't think the fight can develop as the result of organic character interactions:
Yamato doesn't want to fight Jack.
Jack may not even recognise Yamato as an opponent.
Yamato abandoned Momonosuke in Chapter 1012 to hurry up to the Rooftop so she could assist Luffy.
In this (and the forthcoming) chapter(s) she learns that:
- She was too late.
- By leaving Momonosuke behind, she placed him in great danger and at risk from her Father.
She failed to assist Luffy and she failed at the task of Momonosuke's protection that Luffy tasked her with.
Either now or when she gets to the Rooftop, she'll do an about turn and head in a beeline for Kaido. She'll not stop to assist Inuarashi if he needs her help (she has no personal connection to him and unlike Momonosuke, he's not someone that's fated to save the world). She'll be making a beeline for Kaido.
If Jack tries to block her way, she wouldn't stay to fight him. She'll either try to run past him or knock him aside with a Thunder Bagua and continue running for Kaido. She doesn't have the
time to fight Jack.
Yamato abandoning the task of assisting Momonosuke (a task Luffy entrusted to her, not to mention that Momonosuke is so important to the Dawn of the World that she was willing to die for him) to fight Jack doesn't actually work with her character.
Would Jack even care enough to stop her from meeting Kaido. If Yamato wants to see her Father, will he stop her? Does he think he
should?
Yamato and Kaido will have their confrontation at some point.