discontinuous simultaneous techniques

in analysis
The application of coupled techniques to the same sample when sampling for the second technique is discontinuous, e.g. discontinuous thermal analysis and gas chromatography, when discrete portions of evolved volatile(s) are collected from the sample situation in the instrument used for the first technique.
Orange Book, 2nd ed., p. 39 (https://media.iupac.org/publications/analytical_compendium/)