Can we directly observe jet feedback in the distant Universe?

High resolution observations have revealed multiphase, jet-driven outflows in the local Universe. Typically, these operate on sub-kiloparsec scales and are thought to be short-lived, with many driven by radio jets which are themselves young (<103 yrs) and still propagating through the ISM of the host galaxy. We know that jets are thought to dominate the AGN-feedback energy budget out to at least z ~ 2, so observing these outflows beyond the local Universe will be critical to understanding the jet-gas interplay (and more exactly, its evolution) over cosmic history. However, the spatial resolution required to co-locate radio jets and multi-phase gas at even z~0.5 is not readily achievable, certainly not for large samples of AGN; we must find another solution. I will discuss how we can use the radio spectral energy distribution to age AGN jets, with a particular focus on identifying those young jets still embedded in the gas-rich ISM of their host, and which are strong candidates for driving multi-phase outflows. I will then present one such sample of young jets identified using archival survey data alone, and discuss how this archival data can be used in conjunction with spectral line surveys from SKA pathfinders like ASKAP and MeerKAT to search for evidence of outflows even in un(der)resolved systems. I will end with some thoughts on how best to prepare our science, our analysis, and our existing datasets to work with the next generation of radio studies with SKA and ngVLA.