Are 'Kenzan' and 'Ishin' Related as 'Yakuza' Game Spin-Offs?

Are "Yakuza Kenzan" and 'Like a Dragon: Ishin!' related? These two spin-offs take place at different points during the feudal era of Japan.
Are Yakuza Kenzan and 'Like a Dragon: Ishin!' related? These two spin-offs take place at different points during the feudal era of Japan.

Like a Dragon: Ishin Trailer Shows the Yakuza Spin-off's Gameplay

Yakuza Kenzan Remake Would Need A Lot Of Time And Money,, 46% OFF

Like a Dragon: Ishin!, Yakuza Wiki

Sega Europe: No Plans for Yakuza Ishin and Kenzan Release In West

Yakuza Survey Hints at Feudal Japan Spin-Offs Potentially Coming West

Yakuza Ishin y Kenzan necesitarían un remake para poder verlos en Occidente - Meristation

Yakuza games in order: Like a Dragon release and story timeline

Games/spin off concepts,here we gooo : r/yakuzagames

El productor de Yakuza quiere traer a Occidente los spin-off de Yakuza Ishin y Kenzan

Yakuza Kenzan could get a Kiwami remake teases producer » SEGAbits - #1 Source for SEGA News

Yakuza spinoff Like A Dragon: Ishin! coming February 2023

Yakuza 8 devs can't decide what their game is actually called