[gmueckl]

That's not what the draft says. If a provider or service has been identified as a gatekeeper per the criteria laid out in the draft, they need to make the service interoperable with services of other "business users" upon request (that is, other companies). So Signal and Telegram could approach Facebook and ask them for access to some federation-like API to Messenger and WhatsApp and Facebook would be legally required to provide that.

In fact, thinking about the exact wording, there might potentially be a loophole that would allow Messenger and WhatsApp to stay incompatible because they're different services by the same provider. But IANAL.

[Abishek_Muthian]

If that's the case then I stand corrected, Thanks. It just sounds too good to be true, But if consumer protection is the goal then it's what makes most sense.

Still I'm skeptical that this draft would see it's light as a law as it is, iMessage is one of the main pillars of Apple ecosystem; Many in U.S. have told me that they must use iPhone as everyone is on iMessage there and I feel Apple will throw everything it has to prevent it being interoperable with WhatsApp in EU which has significant user-base there.