Open the tabs you want to view
Drag one tab out of the current window to create a new Chrome window
Position the two Chrome windows side by side on your screen
On Windows, press Win + Left or Win + Right to snap a window
On macOS, hover over the green window button and choose Tile Window to Left of Screen or Tile Window to Right of Screen
Use a split-screen extension if you want one Chrome window divided into panes
Resize the windows or panes as needed