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In Nagib, Chauhan and Monkewitz~\cite{NCM07} we concluded that nearly allavailable $C_f$ relations for zero-pressure-gradient boundary layers are inremarkable agreement over the entire range $Re_\theta$ $<$ O($10^8$), providedone coefficient is adjusted in each relation by anchoring it to accuratemeasurements. Regarding the peak of the streamwise turbulence intensity$<uu>^+_P$, we conclude here that accurate measurements in flows with $Re_\tau$$>$ O($10^6$) are required, especially when looking only at the peak $<uu>^+_P$to discriminate between recently proposed trends. We also find remarkableagreement between the three analyses of Monkewitz \cite{M22}, Chen andSreenivasan \cite{CS22} and Monkewitz and Nagib \cite{MN15}, with somecoefficients slightly modified, by underpinning them with the same accuratemeasurements of $<uu>^+_P$ from reliable channel and boundary layer data. Allthe three analyses conclude that the inner peak of $<uu>^+$ remains finite inthe limit of infinite Reynolds number, which is at variance with the unlimitedgrowth of $<uu>^+_P$ as $\ln{Re}$ $_\tau$ predicted by the attached eddy model\cite{MM19}. Accurate measurements of high-order moments and the guidance ofconsistent asymptotic expansions may help clarify the issue at lower $Re_\tau$values.

Reynolds number required to accurately discriminate between proposed trends of skin friction and normal stress in wall turbulence