I do think the reconciliation was genuine in 1997, but just up to a certain point. Otherwise we wouldn't have had Twisted, SYW and all the tours these century (before 2018 of course). But that certainly doesn't mean they went back to being like they were in the 70s. And please, there wasn't any romance in 1997, though I admit I found nice (at that moment) those looks during Landslide and Silver Springs, I always saw it as just acting, nothing more.
Interesting you mention Lindsey hoping for closure. I guess he doesn't realize it is already closed. Unfortunately, it didn't have a proper ending, much less a pleasant one. Any new interaction would be something else entirely, something that wouldn't be called Fleetwood Mac (which, personally, like other Ledgies, I don't want).
Frankly I'd be more excited if they dusted off some unknown demo from the '70s or '80s, whether it's of an unknown song or even an alternate/early version of an old song (not included in any deluxe or expanded edition). That would interest me more than anything new from them.
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