recovering data from an imac 2017 with mojave that won't boot

imac 2017 mojave suddenly got stuck at boot screen. apple logo with boot progress bar reaches to 100% but then gets stuck there and computer never actually boots. I need to recover some data before I actually go ahead and reinstall the OS completely. primary data that I need to extract is the bookmarks and passwords from the chrome browser. booting in recovery mode is successful. I do have access to another mac to clone (if that is even possible). Q1: [primary objective] can I connect two macs, boot the problem machine in target disk mode, and then clone the OS disk completely to the a disk in the healthy mac, and then boot the healthy mac from that cloned OS? Q2: [alternate] if nothing else works, how can I extract only chrome browser data and get passwords + bookmarks extracted from that data?