Fritz was the head of the DPD Homicide Department. Bookhout, Kelley and Holmes were not under his authority or control. Were all four of those people lying when they stated that Oswald denied the curtain rods?
Bookhout's interrogation report doesn't say that Oswald denied carrying curtain rods. Neither does Fritz's. Neither does Kelley's. Neither does Holmes'.
Cherry-picking testimony from months later is disingenuous. Especially when they kept having to be instructed to refer to their reports because their testimony kept contradicting the reports.
As for Bookhout, his report makes two contradictory claims:
"He denied bringing any package to work on the morning of November 22, 1963."
"He stated that his lunch had consisted of a cheese sandwich and an apple which he had obtained at Mrs. Ruth Paine's residence in Irving, Texas, upon his leaving for work that morning."
At least one of these statements has to be false.
A clue is contained in Fritz's report:
"He said he had a cheese sandwich and some fruit and that was the only package he had brought with him to work and denied that he had brought the long package described by Mr. Frazier and his sister."
The problem is, we don't know how Fritz characterized "the long package described by Mr. Frazier and his sister". That's what Oswald denied carrying. For all we know, Fritz handed CE142 to Oswald and said "we have somebody who said you carried this to work".
That's why it's important to know exactly what was asked and exactly what the answer was, rather than summaries that were all given from memory after the fact.
Note that denying talking to Frazier about curtain rods is not the same thing as denying having curtain rods.