All I can think of is Twitter mobile, but even I wouldn't trust it.

I figure it's worth posting my evidence.

https://i.ibb.co/MStKZB6/image.png

I follow Ramzpaul and he retweeted that. It showed up on my timeline (my prev post where I tried it out was just a random person who retweeted something).

As you can see, it doesn't show Ramzpaul's handle when replying.

My whole thing is:

• He'd either have to had followed the person to come up on that random retweet.
• If not a retweet, he should've included the person's tweet AND the part where it shows who he's replying to. Even from the picture you showed, Twitter mobile does show the people you're replying to, so he had to have erased that information from the screenshots.