The slow-burn series about long-married couple Ian and Emma, played by Bean and Walker, tracks them at a difficult point in their relationship when Ian has been made redundant and Emma's head is turned by a colleague at work.
It began on Sunday evening with all four episodes available on BBC iPlayer and continues on BBC One on Monday, but split opinion on whether it was a genius representation of a 30-year marriage, or simply a little dull.
Some viewers were definite in their dislike for the drama, with one person tweeting: "Im sure Marriage on the BBC will be hailed as an acting masterclass. I can honestly say it’s the most boring load of c**p I’ve ever seen. I couldn’t care less about their marriage."
Another viewer added: "That's an hour of my life I'm not getting back won't be wasting another three hours. B O R I N G."
Someone else added: "I was really looking forward to watching #marriagebbc last night, but was so disappointed. I gave up after half an hour…"
However, others felt confused over whether they'd enjoyed it or not.
Watch the trailer for BBC drama 'Marriage'
One viewer tweeted: "The sound was dreadful The whole thing stifling & awkward Every relationship strained And yet I want to know what the reveal is."
Someone else asked: "Can any one tell me what I thought of #marriage last night cause I still don’t know?"
Another person wrote: "Interesting to read the mixed reviews for #marriagebbc this morning. So far I'm intrigued and sticking with it. But I can understand why others aren't."
The drama also found some loyal fans who loved its realistic representation of marriage.
One viewer tweeted: "Can’t believe people saying it’s boring- it’s brilliant. All the things unsaid among families all the time- leaves us to do the work while reflecting the mundane. Very Mike Leigh esque in its filming style too."
Someone else agreed: "This seems to be getting very mixed reviews. I loved ‘Mum’ by the same writer so I think it might be just my thing. I love these slow, ‘chatting about minutiae’ scripts, when it’s really about something else."
Another fan added: "Just watched all of #marriagebbc on i-player and it was utterly compelling viewing. And the theme music is fab too."
Marriage continues on Monday at 9pm on BBC One.
Watch: Emma Thompson responds to Sean Bean's criticism of intimacy co-ordinators