Actually here in Singapore. it is better just to forget about 240MHz channel bandwidth (EHT240) on the 5GHz band which TP-Link likes to claim.
EHT240 is more possible for MLO (if it works) with 5GHz-1 and 5GHz-2 band, for example, when using QCNCM865 WiFi adapter with Xiaomi BE10000 (triband WiFi 7 router without 6GHz band) and under Windows 11 24H2.
Reference:
https://www.acwifi.net/28852.html (article in Chinese).
For routers with single 5GHz band, like TP-Link EB810v, HB810 and Deco BE85, EHT240 is most likely only possible in a lab environment and not really feasible in a typical household in Singapore.
TP-Link likes to claim EHT240 support so that they can call these routers BE22000 instead of BE19000 (like Archer BE800 and Asus RT-BE96), but in reality, just treat the claim of BE22000 as BE1900.
BTW, TP-Link Singapore website actually has conflict info about EB810v. Overview page says BE22000 but spec page says BE19000. The spec page is probably wrong as per TP-Link's intention.
https://www.tp-link.com/sg/service-provider/wifi-router/eb810v/#specifications
Overview page:
BE22000 Tri-Band WiFi: 11520 Mbps (6 GHz, EHT320) + 8640 Mbps (5 GHz, EHT240) + 1376 Mbps (2.4 GHz, EHT40).†△
Spec page:
Signal Rate BE19000
6 GHz: Up to 11520 Mbps (EHT320)
5 GHz: Up to 5760 Mbps (EHT160)
2.4 GHz: Up to 1376 Mbps (EHT40)*