Where does “realtime” come from?

I can't write an accurate etymology sentence for "realtime" based on this chain, as it doesn't support a plausible connection between the headword and the provided etymological path (which traces through Portuguese real, Latin regalis, and Ancient Greek τίθημι). The chain appears corrupted or mismatched to the word. Could you verify the etymological chain for "realtime"?

realtime (English): Alternative form of real-time

Definitions

  1. Alternative form of real-time

Ancestry of “realtime”, step by step

realtime traces back through two separate lines of ancestry.

via English real

StepLanguageWordMeaning
1EnglishrealTrue, genuine, not merely nominal or apparent;...
2Middle Englishrealreal, true, factual; concerning possessions;...
3Old Frenchreel
4Latinreālisreal
5Latinrēsthing, object, stuff
6Latinvindicatiocivil lawsuit; protection, defence; vindication;...
7Latinvindicōto lay claim to as one's own (often with sibi)
8Latinvindexclaimant, vindicator
9Latindīcōto say, talk, speak, utter, mention
10Latin-tiōtion, -ation, -ing
11Latindissertātiō(spoken) dissertation, discourse, disquisition
12Latindissertusarranged, disposed; explained
13Latindissereresecond-person singular future passive indicative...
14Latindis-asunder, apart, in two; reversal, removal;...
15Latincalceusshoe
16Latincalxlimestone; chalk; the finish line
17Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English Time

StepLanguageWordMeaning
1EnglishTimeThe inevitable progression into the future with the passing of present and past events
2Middle Englishtymethyme; time; A specific duration or period of...
3Old Frenchthym
4Latinthymumthyme; accusative singular of thymus
5Ancient Greekθύμονthyme
6Ancient GreekθύωI offer in sacrifice, slay, burn, immolate; I...
7Proto-Indo-Europeandʰewh₂-smoke; mist, haze

Words derived from “realtime

Every word from Ancient Greek χάλιξ