Seems to be.
He was involved in his first collapse at 2.40pm and again later,
"The social media chat includes a series of messages between her and a consultant registrar that one nursing colleague had earlier suggested she was 'flirting' with. [...]
Later, the two colleagues find themselves working side by side as a team of medics work frantically to save first Baby O and later his brother. [...]
Some of the medical notes they write at the time of those collapses were shown to the jury as the prosecution began to go through the evidence relating to the babies' deaths. [...]
In a statement read to the court, the mother said [...] on June 23 her partner went down to the neonatal unit. He returned about 15 minutes later in the company of the registrar involved in the text conversations with Letby.
'(The registrar) came in and said (Baby) O's stomach had swollen and he needed a little bit of help to breath. He appeared very calm. He said it was normal and there was nothing to worry about'.
But when she went down to the unit a few minutes later she was greeted by 'a scene of chaos'. Baby O was in the intensive care nursery and lots of medical staff were 'running around'.
The same registrar was there, along with a female paediatrician and Letby. 'O's cot was now flat and the team were around him. I sat outside in my wheelchair..."
Nurse Lucy Letby 'murdered two triplets immediately after holiday'
Doc: Your notes must have taken a long time. Had you documented anything from this morning?
LL: Can’t think straight, so took a while.
Doc: Phew, not the first day back you were expecting. I was glad you were there, everything felt safe. Thank you for looking out for me.
LL: No, but it happens. Don’t need to thank me, I’m pleased you were there, think we work well together. Sorry for my loss of composure moment
Doc: I was trying to say thanks for checking I was okay. We do work well together
The Trial of Lucy Letby, Episode 21: The Defendant, “I certainly don’t fancy him… just a nice guy.” - The Mail.