Optical spectra of 4FGL J1614.4+5028 (a) and 4FGL J1046.0+5448 (b) modeled with QSOFITMORE. The spectral data are shown with the black line. The red and green lines represent broad and narrow components of the emission line, and the modeled continuum is plotted with the orange line. The blue line is the sum of all the components. The purple line represents the host galaxy component. The horizontal gray dashes at the top of the plots denote the line-free wavelength regions selected to model the continuum emission. It is noteworthy that both spectra are dominated by absorption lines. However, in (a), after subtracting the host galaxy component, the Hα line only has a narrow component, thus is classified as a BL Lac. In contrast, in (b), after subtracting the host galaxy component, the Hα line still exhibits a prominent broad component, and is classified as a FSRQ. Both spectra are from SDSS-DR16.