Great suggestion from #[0] to make easier NostrGram URLs to link to notes. Made that happen so now you can! Just click the chain icon on any note to copy its note id then put the note ID after the hash in the nostrgram url, like so (have to show it as an image or it will link the note):

That will open up the note in the thread view. If the note is a reply, it will load the whole thread, scroll to the note and highlight it so the context is visible.