My sister is one of those people who often starts talking while others are still speaking. Skyping with her drives me mad because the latency amplifies the awkw

My sister is one of those people who often starts talking while others are still speaking. Skyping with her drives me mad because the latency amplifies the awkwardness of trying to race to the end of a sentence before she interrupts. Because of the delay, she spends half of her part of the conversation starting sentences, then pausing and saying "what?" when others are now already half-way through their thought and now stuttering because she's interrupted at a more awkward moment than usual. It is very hard to hold serial (versus parallel) conversations with latency, and especially with this kind of speaker, and so I've avoided the whole zoom craze from the get-go.