I actually don't think that we will. If I recall correctly, Sarek's attendance on the Enterprise for the Babel Conference was the first time they had spoken in 17 years.
The actual line was that they hadn't spoken "as father and son" for seventeen years, so there's some wiggle room there, as long as they keep things coolly professional.
Plus, that line was spoken by Amanda, who might not have known about any encounter with DISCOVERY. It's not like Sarek also told her everything. He didn't even tell her about his heart condition, so he might not have told her about some tense meeting with Spock that occurred when she was nowhere around.