My favs is usually on chat and I prefer that..Some like Dzigns I read for like 10/15 mins but once every month or so.If it's a new reader I try read 5mins to get a feel for them..IF I haven't read with a reader in many months I can do a 20min chat read.
On phone with like barbara48-I talk 5 mins max.She is quick with the cards knows what I want to ask doesn't drag this on and on.
Many of the readers I chat with are ethical or cz they know me and send me a brief summary or end of conversation if we get cut cz I couldn't add more mins