An interesting read by iMedia Communication:

Television is still the focal point of most families living rooms. Brands that advertise on TV have a greater credibility, better brand awareness, and higher response rates. TV and digital advertising have a synergistic effect when they work together.

Digital advertising helps add more touchpoints to TV advertising, and television ads lend credibility and scale to digital advertising.

Always run a TV campaign in conjunction with a search engine marketing or retargeting campaign; by marrying the two, you amplify reach and response while still being able to micro-target.

Read more here: https://www.imediaconnection.com/article/244433/180306-how-tv-advertising-and-digital-marketing-work-together-to-achieve-greater-roi