Keplerian radius of the [O I] 630 nm NLVC emission region is plotted against the estimated and/or measured radius of the dusty disk inner rim, following different approaches. Color circles refer to the dust sublimation radius (colour code as in left upper panel of Fig. 4), squares refer to the magnetospheric radius, while asterisks are the dust inner rim radius measured through near-IR interferometric observations (see text for more details).