

Compatibilty, stability, pdf export and import is all very good. Calc has no real differences with Excel for my use cases (less automated formatting options) Impress is a little lagging behind powerpoint in terms of compatibility and formatting option (this may nag you if you have to use templates from other people). Otherwise I have no issues working with LO on Linux in full Windows Office 365 coworkers
There is no “import/export” process, you just open it and it works. It fails sometimes for docx, but only for the fancy page layouts (like if you want a full page background image for your company official documents ; or if an ass overloads tables in the file). Even if it fails the document shows up with all the text, it is just the layout that will be different.