> Q: But was it ever below 90, here or at the White House?
> CONLEY: No, it was below 94 percent. It wasn't down in the low 80s or anything.
When Conley answer's "No," that implies it was not below 90 "here" or at the White House. And "it was below 94 percent" implies it was somewhere in the range of 90 to 94. Assuming Conley told the truth, the only way you can interpret the oxygen levels as being below 90 is if you ignore the presence of the word "no."
I've noticed when speaking with physicians that they tend to give very precise answers (unless they believe the precise answer will lead to worse health outcomes for a patient). This exchange sounded pretty typical to me. Doesn't seem like Conley intended anything nefarious.