The webapp provides for each item the link on ECB's website.
Speeches for : Christine Lagarde where "relevant" appeared
2023-10-04 : Welcome address2022-02-14 : European Parliament plenary debate on the ECB Annual Report
2021-07-11 : Climate Change and Central Banks: Analysing, Advising and Acting
2019-12-16 : Interview with NOS Nieuwsuur