Change of Elder Wand ownership

Question

During the events of Cursed Child Harry was disarmed by Delphini in the church of Godric's Hollow.

Does this mean that the Elder Wand has changed its ownership to Delphini?

Answer 1

Maybe, but if so not for long

If Harry was still master of the Elder Wand, it would almost certainly have transferred its loyalty to Delphini. The latter did disarm Harry:

HARRY: Fine. I’ll deal with you alone.

He moves to attack her again. But she is far stronger. HARRY’s wand ascends upwards towards her. He is disarmed. He is helpless.

_{Harry Potter and the Cursed Child}

However, we cannot be sure that Harry is still the master of the Elder Wand. He’s been an active Auror for over a decade. It is entirely possible that someone else disarmed him in the interim, without killing him, and that he never disarmed that individual again (or disarmed someone who disarmed that individual, or disarmed someone who disarmed someone who disarmed that individual, or....)

What’s more, Delphi was defeated after she disarmed Harry. Now, she did not have her wand, because Cedric had disarmed her:

Bang. DELPHI’s wand is pulled away from her. SCORPIUS looks on in astonishment.

_{Harry Potter and the Cursed Child}

After that she went straight to the past. And indeed, she is a very powerful witch: she casts all her spells wandlessly in her battle with Harry.

DELPHI: Father . . .

She tries to get a glimpse of his face again — there is almost a dance happening here.

You are not Lord Voldemort.

DELPHI unleashes a bolt from her hand. HARRY matches her.

_{Harry Potter and the Cursed Child}

So she could not have been disarmed. But she was defeated in magical combat. There’s no doubt that the Elder Wand would have seen this as making the person who defeated her the stronger witch or wizard:

HARRY: I’ve never fought alone, you see. And I never will.

And HERMIONE, RON, GINNY, and DRACO emerge from the doors, and fire up their spells at DELPHI, who screams out in exasperation. This is titanic. But she can’t fight them all. There are a series of bangs — and then, overwhelmed, DELPHI tumbles to the floor.

DELPHI: No . . . No . . .

HERMIONE: Brachiabindo!

She’s bound. HARRY advances towards DELPHI. He doesn’t take his eyes off her. All the others stay back.

_{Harry Potter and the Cursed Child}

Now, it’s not clear whom the Elder Wand would have considered to have defeated her, though Hermione seems the likeliest contender. But whoever that individual may be, they would then be the master of the Elder Wand, not Delphi.

Answer 2

I agree with the above answer, but we have to consider the most horrible and confusing of concepts aswell - time.

Think about it - the characters go back to 1981. Now, I don't know whether it would make any difference, but in 1981 Harry was not the master of the elder wand, Dumbledore was still. I'm not sure of when adult Harry travels back, his claim to mastery of the elder wand would be temporarily revoked, because in a linear sense the events of Deathly Hallows are yet to happen, and surely there couldn't be two wizards in one time period who can lay claim as the wand's master. There can only be one master of the elder wandZ

However on his personal timeline , those events have happened so I don't know which one would be followed. If thepersonal timelike was fine followed, then Delphi followed by Hermione would be the wand's master