Hello! I'll be arriving in FRA from BEG at the AEUW gates on LH (Y), connecting to Condor (J) to the US (gates B48-60) on separate tickets, no check-in bags. It's a 4.5hr layover, so I'm hoping that it isn't too risky.
1. Do I need to go through transit security?
You should arrive clean.
2. Do I need to go through passport control?
Yes.
3. How much time will each of these take (US passport)?
If you're Easypass enrolled a couple of seconds. - For manned booths: it depends.
EDIT: sorry, got tricked, by the EU in AEUW. - It's actually the clean Non-Schengen bus arrival. So no passport check in Frankfurt.
There's an additional documents check directly at the Condor gate where you'd get your doccheck sticker/stamp. - The last time it was a little bit chaotic (just a table somewhere in a corner, no clear signs)
4. Will there be a Condor transfer desk somewhere on the way in case OLCI and mobile boarding pass don't work? Or would I need to exit landside and go to the terminal checkin area?
The gate should be able to print you the boarding pass (passport control usually doesn't require a boarding pass).
They used to have a transfer counter in B:
https://www.condor.com/eu/fileadmin/...ngl_Update.pdf