Siren's Lure and Heidelberg Castle Timing Question

Is there a window between an action and the combat queued by Siren's Lure for a player to use Heidelberg Castle? eg: - vamp A attempts to block an action - vamp B plays Siren's Lure - action resolves Does vamp A's controller have an opportunity at this point to use Heidelberg Castle? > Name: Siren's Lure > [BL:R1, LoB:R] > Cardtype: Action Modifier > Discipline: Melpominee/Celerity > [cel] This vampire burns 2 blood to get +1 stealth. > [mel] Only usable by an unlocked ready vampire other than the acting minion when a minion attempts to block. That minion cannot block this action. Lock this vampire and that minion. Once the action resolves, this vampire enters combat with that minion. > [MEL] As [mel] above, but do not lock this modifying vampire. > Artist: Steve Prescott > > Name: Heidelberg Castle, Germany > [DS:U2, FN:PR, KMW:PAl, LoB:PI] > Cardtype: Master > Cost: 2 pool > Master: unique location. > Lock to move blood, equipment cards and/or retainers between any two ready vampires you control. (You choose the amount of blood you move and which cards you transfer.) Cannot be used during an action. > Artist: L. A. Williams > Suaku Inceptor Asian Continental Championship 興っ www.youtube.com/SuakuOz

For that matter, is the combat created by Siren's Lure part of an action, or does it exist outside of any actions? Suaku Inceptor Asian Continental Championship 興っ www.youtube.com/SuakuOz

It's part of the action. You can't use Heidelberg Castle before the combat created by Siren's Lure. Prince of Paris, France Ratings Coordinator, Rules Director