Notes 8 certainly seems to hint at having iCal (or whatever) import/export. Think it was that I looked at before, and googled a lot, only to find you needed some plugin. Not sure I’d use the word “sync”, but then the LN “help” pages are so useless they make a chocolate fireguard look useful.
My brief look this afternoon hints at being able to maintain remote calendars (both ways), but no hints whatsoever about alarms etc. (although they are useless if meetings are rescheduled due to other LN “feature”)
LN was easily the worst s/w ever released for public use. Now demoted to 2nd place by Yahoo Mail.
One of those things that had massive potential, but ended up as just a very expensive email client (and associated server), that’s impossible to find your way around. IMHO.