Would these help you?
Making Obsidian play nice with Logseq - Customization / Look what I built - Logseq
How to use Obsidian and Logseq together and why Markdown matters – Logseq Community Hub
How to use Obsidian and Logseq together and why a Markdown backend matters - YouTube
How to use Logseq in sync with Obsidian - A step by step setup - YouTube