Pretty sure that debit chargebacks lead to an instant credit (by regulation).
I'm almost tempted to test it right now but I am pretty sure I did this once and it took under 1 day
Ok now I asked a chatbot for how this is regulated. The answer was wrong as expected but it happened to mention the applicable regulation which can be looked up at gesezte-im-internet.de
§ 675u BGB - requires immediate credit for unauthorized card payments
§ 675x BGB - chargeback in 10 days for direct debit transactions (lastschrift)
https://www.gesetze-im-internet.de/bgb/__675x.html
I guess this is just germany but I vagely remember a payment processor eu directive that this is probably implementing (PSD)
-> Yes.
It is article 73 and 76 of PSD
https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CEL...
So this holds EU wide for all banks.
This was literally 15 mins of googling (well duckduck ing) on the train.
Now there still could be counterveiling evidence and ianal etc, so use grain of salt. Gotta get off now.