But when Linden entered the Land, I felt somewhat disappointed that the scenario from TWL was happening again.
Not the Sunbane of course, but the sensation of deja-vu!?
Yes, I felt that way too. Lots of parallels with TWL (but rather few with LFB other than the location itself). Like Covenant in TWL Linden is summoned to Kevin’s Watch mortally wounded, but is healed by the Wild Magic. She receives a prophecy of doom (visual rather than verbal for the most part in her case), notes that something is amiss in the Land below (Sunbane’s cororna/rain clouds in TWL; Kevin’s Dirt in Runes); is met by a mentally distutrbed person (Nassic wasn’t playing with a full deck either in TWL); is imprsioned in Mithil Stonedown, then escapes. Of course Anele isn’t murdered by a Raver as Nassic was, Liand is far more like Lena than like Sunder, and Linden’s life is not threatened by her captors. And of course Linden shows up on Kevin’s Watch alone.
One would assume that Drool Rockworm was in Mount Thunder when Covenant was summoned in LFB - but why was he placed on KW?
Perhaps to place Covenant as far from Revelstone as possible so he would have the maximum opportunity to screw things up on his way there. I doubt Foul could have foreseen the rape, but he probably figured TC would do a good deal of damage somehow.
It's clear in TWL that a specific location in the "real world' was necessary for Covenant's summoning.
Since Covnenant is summoned from four different locations in the First Chronicles (the street in the town, his living room, two places in the woods) it would seem that a summoning can occur anywhere. Also, Hile Troy was snatched from some location (near DC?) quite a distance from TC’s home. What does seem to be true is that without the Staff of Law it is only possible to summon a person who is in bad shape in the real world (TC; now Linden, Joan and probably Roger) though once the gate is opened others (Linden; now Jeremiah) can be brought along.